# Design contract: nominal dimensions are digital CAD targets; source uncertainty is recorded in brief.md.
schema_version: 1
name: rpi5-enclosure
intent: Design a two-piece FFF-printed enclosure (base and removable lid, two separate solids in one STEP) for a
  Raspberry Pi 5 to the attached requirements document, in the board frame it defines (x along 85, y along 56, PCB
  bottom at z = 0). The board must fit with 0.5 mm edge clearance and 20 mm headroom above the PCB; four standoffs
  meet the PCB bottom at the Ø2.7 mounting holes (3.5,3.5) (61.5,3.5) (3.5,52.5) (61.5,52.5) with Ø2.5 x 5 pilot
  holes; every listed cable-plug envelope (USB-C, 2x micro-HDMI on y = 0; 2x USB-A stacks and RJ45 on x = 85; micro-SD
  under x = 0) passes through its wall opening; the lid closes on the base rim with zero interference and is held
  by four Ø3 through holes into Ø2.5 corner-post pilots; walls and floor >= 2 mm (5th percentile of inward ray casts;
  the Ø6.2 standoff bosses' 1.85 mm annuli are the accepted exception). Declare the base and lid as acceptance solids
  by a contained point, the keep-outs and plug envelopes as acceptance hardware with no-interference clearances,
  the standoff faces and pilot holes as faces and cylinders pinned by interfaces, and the wall minimum as a p05
  thickness check. Headroom, wall thickness and standoff height are top-level parameters; the headroom parameter
  gets a 10-value regeneration sweep (15..35, every value must build) and one infeasible negative value guarded
  by an assert.
units:
  length: mm
  angle: deg
material: null
density_kg_m3: null
process: FFF printing; no supports; overhangs <=45 deg; base prints on its floor exterior and lid inverted on its
  ceiling exterior.
release_status: prototype
frame:
  origin: Intersection of the extended PCB x=0 and y=0 straight edges at the board corner nearest USB-C (lower-left
    in the drawing plan), on the PCB bottom z=0; use the virtual sharp corner, not a rounded outline point.
  axes:
    x: Along the 85 mm board edge from the USB-C-side virtual corner toward the USB-A/RJ45 edge at x=85.
    y: Along the 56 mm board edge from the USB-C/micro-HDMI edge y=0 toward the GPIO-header edge y=56 (upward on
      the plan).
    z: 'Right-handed normal out of the component side: PCB bottom z=0, PCB top z=1.6; bottom-side components have
      negative z.'
  datums:
  - name: A
    description: PCB bottom plane z=0, reproduced by the four annular standoff seats.
  - name: B
    description: Virtual PCB edge plane x=0, the micro-SD side; x mounting columns are 3.5 and 61.5 from this plane.
  - name: C
    description: Virtual PCB edge plane y=0, USB-C/micro-HDMI side; mounting rows are 3.5 and 52.5 from this plane.
  - name: D
    description: Nominal base rim z=21.55 and parallel lid underside z=21.6; both translate with headroom and retain
      their 0.05 mm gap.
envelope:
  min:
  - -8.5
  - -8.5
  - -7.4
  max:
  - 93.5
  - 64.5
  - 25.6
  tolerance: 0.1
parameters:
- name: boardLength
  value: 85
  unit: mm
  provenance: stated
  tolerance: 0.01
  source: 'sources/rpi5-enclosure-requirements.md: Board frame: "85 mm board edge"'
  description: PCB extent along +x.
- name: boardWidth
  value: 56
  unit: mm
  provenance: stated
  tolerance: 0.01
  source: 'sources/rpi5-enclosure-requirements.md: Board frame: "56 mm edge"'
  description: PCB extent along +y.
- name: pcbThickness
  value: 1.6
  unit: mm
  provenance: stated
  tolerance: 0.01
  source: 'sources/rpi5-enclosure-requirements.md: Board frame: "PCB top at z = 1.6"'
  description: PCB top elevation above its bottom datum.
- name: mountX
  value: 3.5
  unit: mm
  provenance: stated
  tolerance: 0.01
  source: 'sources/rpi5-enclosure-requirements.md: Board frame: mounting-hole coordinate list'
  description: Near mounting-hole column x.
- name: mountY
  value: 3.5
  unit: mm
  provenance: stated
  tolerance: 0.01
  source: 'sources/rpi5-enclosure-requirements.md: Board frame: mounting-hole coordinate list'
  description: Near mounting-hole row y.
- name: mountPitchX
  value: 58
  unit: mm
  provenance: stated
  tolerance: 0.01
  source: 'sources/rpi5-enclosure-requirements.md: Board frame: "58 x 49 centres"'
  description: Mounting-hole column separation.
- name: mountPitchY
  value: 49
  unit: mm
  provenance: stated
  tolerance: 0.01
  source: 'sources/rpi5-enclosure-requirements.md: Board frame: "58 x 49 centres"'
  description: Mounting-hole row separation.
- name: boardMountDiameter
  value: 2.7
  unit: mm
  provenance: stated
  tolerance: 0.01
  source: 'sources/rpi5-enclosure-requirements.md: Board frame: "Mounting holes Ø2.7 (M2.5)"'
  description: Board mounting-hole diameter; board is evaluator hardware, not a deliverable solid.
- name: underBoardDepth
  value: 3
  unit: mm
  provenance: stated
  tolerance: 0.01
  source: 'sources/rpi5-enclosure-requirements.md: Board frame: "reach z = -3.0"'
  description: Bottom-component extent below z=0, expressed as a positive depth.
- name: componentFreeRadius
  value: 3.1
  unit: mm
  provenance: stated
  tolerance: 0.01
  source: 'sources/rpi5-enclosure-requirements.md: Board frame: "within 3.1 mm of each hole centre"'
  description: Radius excluded from the bottom-component keep-out around each mounting axis.
- name: edgeClearance
  value: 0.5
  unit: mm
  provenance: stated
  tolerance: 0.01
  source: 'sources/rpi5-enclosure-requirements.md: Enclosure requirement 3: "Leave >= 0.5 mm"'
  description: Minimum PCB-edge clearance; sets the rectangular cavity footprint.
- name: headroom
  value: 20
  unit: mm
  provenance: stated
  tolerance: 0.01
  source: 'sources/rpi5-enclosure-requirements.md: Board frame: "20.0 mm of clear height above the PCB top"; requirement
    9'
  description: Lid underside elevation is pcbThickness + headroom; nominal fit is checked only at 20.
  edit_test:
    delta: 5
    expect:
      volume_delta: 3560
      direction: increase
      tolerance_rel: 0.02
      bbox_delta:
      - 0
      - 0
      - 5
    sweep:
      min: 15
      max: 35
      steps: 10
    infeasible_deltas:
    - -21
- name: wallThickness
  value: 2.4
  unit: mm
  provenance: inferred
  tolerance: 0.2
  rationale: 'Q1/Q4: choose 2.4 mm to leave a 0.4 mm modeling/printing margin over the 2.0 mm shell minimum; nozzle
    and polymer are unspecified. Grow outer walls away from the fixed cavity.'
  description: Common floor and straight-wall thickness, greater than the stated 2 mm minimum.
- name: standoffHeight
  value: 5
  unit: mm
  provenance: inferred
  tolerance: 0.5
  rationale: 'Q1: 5 mm permits the required 5 mm blind pilots to end at the floor top, clears components to z=-3
    by 2 mm, and with a 2.4 mm floor contains the mandated base selector at z=-6.'
  description: Height from the interior floor at -standoffHeight to the fixed PCB datum z=0.
  edit_test:
    delta: 1
    expect:
      volume_delta: 1063.1628216039912
      direction: increase
      tolerance_rel: 0.02
      bbox_delta:
      - 0
      - 0
      - 1
- name: standoffDiameter
  value: 6.2
  unit: mm
  provenance: stated
  tolerance: 0.01
  source: 'sources/rpi5-enclosure-requirements.md: Requirement 7: "a boss capped at Ø6.2 around a Ø2.5 pilot leaves
    a 1.85 mm annulus"; user intent specifies Ø6.2 bosses'
  description: Four cylindrical standoff bosses; 1.85 mm radial annulus around each 2.5 mm pilot.
- name: pilotDiameter
  value: 2.5
  unit: mm
  provenance: stated
  tolerance: 0.01
  source: 'sources/rpi5-enclosure-requirements.md: Enclosure requirements 2 and 6: "Ø2.5"'
  description: Diameter of all four standoff pilots and all four corner-post pilots.
- name: pilotDepth
  value: 5
  unit: mm
  provenance: stated
  tolerance: 0.01
  source: 'sources/rpi5-enclosure-requirements.md: Requirements 2 and 6: ">= 5 mm deep"; user intent specifies "Ø2.5
    x 5"'
  description: Exact nominal blind-pilot depth; satisfies the source lower bound of 5 mm.
- name: lidHoleDiameter
  value: 3
  unit: mm
  provenance: stated
  tolerance: 0.01
  source: 'sources/rpi5-enclosure-requirements.md: Requirement 6: "Ø3.0..3.4"; user intent specifies four Ø3 through
    holes'
  description: Four clearance holes through the lid; uses the exact user-intent diameter and the lower endpoint
    of the source range.
- name: lidThickness
  value: 4
  unit: mm
  provenance: inferred
  tolerance: 0.25
  rationale: 'Q1: a 4 mm flat lid places the fixed selector 1 mm below its top and leaves 2 mm above the USB-A relief
    at the minimum headroom of 15 mm.'
  description: Flat lid thickness; nominal z range 21.6..25.6 contains the mandated lid selector at z=24.6.
- name: cornerPostWidth
  value: 8
  unit: mm
  provenance: inferred
  tolerance: 0.5
  rationale: 'Q1: 8 mm square posts leave 2.75 mm to a centered 2.5 mm pilot and 2.5 mm to a 3 mm lid hole. Their
    inner corner is the cavity corner, and their overlap with the main wall is wallThickness squared.'
  description: Square external corner posts, continued through the base height; lid outline covers them.
- name: closureGap
  value: 0.05
  unit: mm
  provenance: inferred
  tolerance: 0.02
  rationale: 'Q2: a 0.05 mm modeled separation keeps two removable solids with no fused or overlapping material,
    within the required maximum closest gap of 0.1 mm.'
  description: 'Nominal axial air gap: base rim is pcbThickness + headroom - closureGap.'
- name: usbCx
  value: 11.2
  unit: mm
  provenance: stated
  tolerance: 0.01
  source: 'sources/rpi5-enclosure-requirements.md: Board frame: connector locations and requirement 4 plug boxes'
  description: USB-C x center on y=0.
- name: hdmi0X
  value: 25.8
  unit: mm
  provenance: stated
  tolerance: 0.01
  source: 'sources/rpi5-enclosure-requirements.md: Board frame: connector locations and requirement 4 plug boxes'
  description: First micro-HDMI x center on y=0.
- name: hdmi1X
  value: 39.2
  unit: mm
  provenance: stated
  tolerance: 0.01
  source: 'sources/rpi5-enclosure-requirements.md: Board frame: connector locations and requirement 4 plug boxes'
  description: Second micro-HDMI x center on y=0.
- name: usbAUpperY
  value: 47
  unit: mm
  provenance: stated
  tolerance: 0.01
  source: 'sources/rpi5-enclosure-requirements.md: Board frame: connector locations and requirement 4 plug boxes'
  description: Upper stacked USB-A pair y center on x=85.
- name: usbALowerY
  value: 29.1
  unit: mm
  provenance: stated
  tolerance: 0.01
  source: 'sources/rpi5-enclosure-requirements.md: Board frame: connector locations and requirement 4 plug boxes'
  description: Lower stacked USB-A pair y center on x=85.
- name: rj45Y
  value: 10.2
  unit: mm
  provenance: stated
  tolerance: 0.01
  source: 'sources/rpi5-enclosure-requirements.md: Board frame: connector locations and requirement 4 plug boxes'
  description: RJ45 y center on x=85.
- name: sdYMin
  value: 22
  unit: mm
  provenance: stated
  tolerance: 0.01
  source: 'sources/rpi5-enclosure-requirements.md: Board frame: connector locations and requirement 4 plug boxes'
  description: Micro-SD access minimum y.
- name: sdYMax
  value: 34
  unit: mm
  provenance: stated
  tolerance: 0.01
  source: 'sources/rpi5-enclosure-requirements.md: Board frame: connector locations and requirement 4 plug boxes'
  description: Micro-SD access maximum y.
features:
- id: base_shell
  kind: shell
  description: Rectangular cavity [-0.5,85.5] x [-0.5,56.5], straight 2.4 mm walls, 2.4 mm floor, and four square
    external corner posts. Floor top is -standoffHeight; footprint O is defined in brief section 5.
  parameters:
  - boardLength
  - boardWidth
  - edgeClearance
  - wallThickness
  - standoffHeight
  - headroom
  - pcbThickness
  - cornerPostWidth
  - closureGap
  verify:
  - method: bbox
  - method: section
    section: floor_section
  - method: section
    section: pcb_level_section
  - method: face
    face: floor_exterior
  - method: face
    face: floor_interior
  - method: dimension
    dimension: floor_thickness
- id: board_keepouts
  kind: cavity
  description: All PCB, lower-component and top-component hardware envelopes clear the enclosure; the expanded edge
    envelope guarantees 0.5 mm lateral clearance.
  parameters:
  - boardLength
  - boardWidth
  - pcbThickness
  - underBoardDepth
  - componentFreeRadius
  - edgeClearance
  - headroom
  verify:
  - method: section
    section: pcb_level_section
  - method: void
    points:
    - - 42.5
      - 28
      - 0.8
    - - 42.5
      - 28
      - -1.5
    - - 42.5
      - 28
      - 10
- id: standoff_bosses
  kind: boss
  count: 4
  description: Four 6.2 mm bosses anchored in the floor and ending at z=0; exactly inside the component-free rings.
  parameters:
  - mountX
  - mountY
  - mountPitchX
  - mountPitchY
  - standoffDiameter
  - standoffHeight
  verify:
  - method: cylinder
    cylinder: standoff_1_boss
  - method: cylinder
    cylinder: standoff_2_boss
  - method: cylinder
    cylinder: standoff_3_boss
  - method: cylinder
    cylinder: standoff_4_boss
  - method: section
    section: standoff_section
  - method: count
    section: standoff_section
    count: 5
    note: Five material regions = shell + four annular bosses; section.holes=4.
- id: pcb_seats_and_pilots
  kind: hole
  count: 4
  description: Four separately named annular PCB seats at z=0, with fixed mounting axes and 2.5 x 5 blind pilots.
    Do not model the 2.7 mm PCB holes as extra enclosure holes.
  parameters:
  - mountX
  - mountY
  - mountPitchX
  - mountPitchY
  - boardMountDiameter
  - standoffDiameter
  - pilotDiameter
  - pilotDepth
  verify:
  - method: face
    face: standoff_1_seat
  - method: cylinder
    cylinder: standoff_1_pilot
  - method: dimension
    dimension: standoff_1_pilot_depth
  - method: face
    face: standoff_2_seat
  - method: cylinder
    cylinder: standoff_2_pilot
  - method: dimension
    dimension: standoff_2_pilot_depth
  - method: face
    face: standoff_3_seat
  - method: cylinder
    cylinder: standoff_3_pilot
  - method: dimension
    dimension: standoff_3_pilot_depth
  - method: face
    face: standoff_4_seat
  - method: cylinder
    cylinder: standoff_4_pilot
  - method: dimension
    dimension: standoff_4_pilot_depth
- id: lid
  kind: extrude
  description: Separate flat 4 mm plate with footprint O, below face at pcbThickness+headroom and four 3 mm through
    holes. Apply source plug cutters to the lid at every headroom; they are inactive at nominal 20 and form USB-A
    edge reliefs at 15.
  parameters:
  - headroom
  - pcbThickness
  - lidThickness
  - cornerPostWidth
  - lidHoleDiameter
  verify:
  - method: section
    section: lid_section
  - method: face
    face: lid_underside
  - method: face
    face: lid_exterior
  - method: dimension
    dimension: lid_thickness
  - method: solid
    points:
    - - 42.5
      - 28
      - 24.6
- id: corner_post_fasteners
  kind: hole
  count: 4
  description: Four square corner posts outside the PCB, each with a 2.5 x 5 blind pilot and a coaxial 3 mm lid
    through hole. All posts are integral with the base floor/walls.
  parameters:
  - cornerPostWidth
  - edgeClearance
  - boardLength
  - boardWidth
  - pilotDiameter
  - pilotDepth
  - lidHoleDiameter
  - lidThickness
  - headroom
  verify:
  - method: cylinder
    cylinder: corner_1_pilot
  - method: cylinder
    cylinder: corner_1_lid_hole
  - method: dimension
    dimension: corner_1_pilot_depth
  - method: cylinder
    cylinder: corner_2_pilot
  - method: cylinder
    cylinder: corner_2_lid_hole
  - method: dimension
    dimension: corner_2_pilot_depth
  - method: cylinder
    cylinder: corner_3_pilot
  - method: cylinder
    cylinder: corner_3_lid_hole
  - method: dimension
    dimension: corner_3_pilot_depth
  - method: cylinder
    cylinder: corner_4_pilot
  - method: cylinder
    cylinder: corner_4_lid_hole
  - method: dimension
    dimension: corner_4_pilot_depth
- id: removable_closure
  kind: other
  description: Two separate solids; base rim and lid underside separated by closureGap=0.05 mm; independent clearance
    check caps closest gap at 0.1 mm and forbids interference.
  parameters:
  - headroom
  - closureGap
  verify:
  - method: face
    face: base_rim
  - method: face
    face: lid_underside
  - method: dimension
    dimension: rim_lid_gap
- id: fff_print_orientation
  kind: other
  description: 'Support-free construction: base extrusions and open-to-rim notches have vertical sides; print on
    the floor exterior. Lid prints upside down on the flat exterior. No bridges or overhang roofs on the base. Shell
    p05 must be >=2 mm; the 1.85 mm boss annuli are the explicit exception.'
  parameters:
  - wallThickness
  - lidThickness
  verify:
  - method: face
    face: floor_exterior
  - method: face
    face: lid_exterior
  - method: section
    section: all_ports_section
- id: usb_c_plug_opening
  kind: cut
  description: Support-free open-top wall notch for usb_c_plug. Lower and side limits match the source box; opening
    extends upward to the moving rim. Subtract the original plug box from the lid as well so the USB-A apertures
    survive the headroom=15 case.
  parameters:
  - usbCx
  - wallThickness
  - headroom
  verify:
  - method: face
    face: usb_c_plug_sill
  - method: dimension
    dimension: usb_c_plug_width
  - method: void
    points:
    - &id001
      - 11.2
      - -1.7
      - 5.1
- id: hdmi0_plug_opening
  kind: cut
  description: Support-free open-top wall notch for hdmi0_plug. Lower and side limits match the source box; opening
    extends upward to the moving rim. Subtract the original plug box from the lid as well so the USB-A apertures
    survive the headroom=15 case.
  parameters:
  - hdmi0X
  - wallThickness
  - headroom
  verify:
  - method: face
    face: hdmi0_plug_sill
  - method: dimension
    dimension: hdmi0_plug_width
  - method: void
    points:
    - &id002
      - 25.8
      - -1.7
      - 4.85
- id: hdmi1_plug_opening
  kind: cut
  description: Support-free open-top wall notch for hdmi1_plug. Lower and side limits match the source box; opening
    extends upward to the moving rim. Subtract the original plug box from the lid as well so the USB-A apertures
    survive the headroom=15 case.
  parameters:
  - hdmi1X
  - wallThickness
  - headroom
  verify:
  - method: face
    face: hdmi1_plug_sill
  - method: dimension
    dimension: hdmi1_plug_width
  - method: void
    points:
    - &id003
      - 39.2
      - -1.7
      - 4.85
- id: usb_a_upper_plug_opening
  kind: cut
  description: Support-free open-top wall notch for usb_a_upper_plug. Lower and side limits match the source box;
    opening extends upward to the moving rim. Subtract the original plug box from the lid as well so the USB-A apertures
    survive the headroom=15 case.
  parameters:
  - usbAUpperY
  - wallThickness
  - headroom
  verify:
  - method: face
    face: usb_a_upper_plug_sill
  - method: dimension
    dimension: usb_a_upper_plug_width
  - method: void
    points:
    - &id004
      - 86.7
      - 47.0
      - 10.100000000000001
- id: usb_a_lower_plug_opening
  kind: cut
  description: Support-free open-top wall notch for usb_a_lower_plug. Lower and side limits match the source box;
    opening extends upward to the moving rim. Subtract the original plug box from the lid as well so the USB-A apertures
    survive the headroom=15 case.
  parameters:
  - usbALowerY
  - wallThickness
  - headroom
  verify:
  - method: face
    face: usb_a_lower_plug_sill
  - method: dimension
    dimension: usb_a_lower_plug_width
  - method: void
    points:
    - &id005
      - 86.7
      - 29.1
      - 10.100000000000001
- id: rj45_plug_opening
  kind: cut
  description: Support-free open-top wall notch for rj45_plug. Lower and side limits match the source box; opening
    extends upward to the moving rim. Subtract the original plug box from the lid as well so the USB-A apertures
    survive the headroom=15 case.
  parameters:
  - rj45Y
  - wallThickness
  - headroom
  verify:
  - method: face
    face: rj45_plug_sill
  - method: dimension
    dimension: rj45_plug_width
  - method: void
    points:
    - &id006
      - 86.7
      - 10.2
      - 9.100000000000001
- id: sd_card_slot_opening
  kind: cut
  description: Support-free open-top wall notch for sd_card_slot. Lower and side limits match the source box; opening
    extends upward to the moving rim. Subtract the original plug box from the lid as well so the USB-A apertures
    survive the headroom=15 case.
  parameters:
  - sdYMin
  - sdYMax
  - wallThickness
  - headroom
  verify:
  - method: face
    face: sd_card_slot_sill
  - method: dimension
    dimension: sd_card_slot_width
  - method: void
    points:
    - &id007
      - -1.7
      - 28.0
      - -1.5
interfaces:
- name: pcb_mount_1
  description: Keep mounting axis (3.5, 3.5), seat z=0, and the 2.5 x 5 blind pilot fixed across headroom and standoff-height
    edits. Pilot engagement is pinned by the individual cylinder length and axial range; separate face-to-face depth
    dimensions are nominal acceptance checks.
  checks:
  - standoff_1_seat
  - standoff_1_pilot
- name: pcb_mount_2
  description: Keep mounting axis (61.5, 3.5), seat z=0, and the 2.5 x 5 blind pilot fixed across headroom and standoff-height
    edits. Pilot engagement is pinned by the individual cylinder length and axial range; separate face-to-face depth
    dimensions are nominal acceptance checks.
  checks:
  - standoff_2_seat
  - standoff_2_pilot
- name: pcb_mount_3
  description: Keep mounting axis (3.5, 52.5), seat z=0, and the 2.5 x 5 blind pilot fixed across headroom and standoff-height
    edits. Pilot engagement is pinned by the individual cylinder length and axial range; separate face-to-face depth
    dimensions are nominal acceptance checks.
  checks:
  - standoff_3_seat
  - standoff_3_pilot
- name: pcb_mount_4
  description: Keep mounting axis (61.5, 52.5), seat z=0, and the 2.5 x 5 blind pilot fixed across headroom and
    standoff-height edits. Pilot engagement is pinned by the individual cylinder length and axial range; separate
    face-to-face depth dimensions are nominal acceptance checks.
  checks:
  - standoff_4_seat
  - standoff_4_pilot
- name: lid_fastener_1
  description: Coaxial lid clearance and corner-post pilot at (-4.5, -4.5), outside PCB; diameter and depth fixed,
    axial translation with headroom allowed. Individual cylinder lengths pin pilot depth and lid through length;
    dimensions referencing the moving absolute rim plane are nominal checks only.
  checks:
  - corner_1_pilot
  - corner_1_lid_hole
- name: lid_fastener_2
  description: Coaxial lid clearance and corner-post pilot at (89.5, -4.5), outside PCB; diameter and depth fixed,
    axial translation with headroom allowed. Individual cylinder lengths pin pilot depth and lid through length;
    dimensions referencing the moving absolute rim plane are nominal checks only.
  checks:
  - corner_2_pilot
  - corner_2_lid_hole
- name: lid_fastener_3
  description: Coaxial lid clearance and corner-post pilot at (-4.5, 60.5), outside PCB; diameter and depth fixed,
    axial translation with headroom allowed. Individual cylinder lengths pin pilot depth and lid through length;
    dimensions referencing the moving absolute rim plane are nominal checks only.
  checks:
  - corner_3_pilot
  - corner_3_lid_hole
- name: lid_fastener_4
  description: Coaxial lid clearance and corner-post pilot at (89.5, 60.5), outside PCB; diameter and depth fixed,
    axial translation with headroom allowed. Individual cylinder lengths pin pilot depth and lid through length;
    dimensions referencing the moving absolute rim plane are nominal checks only.
  checks:
  - corner_4_pilot
  - corner_4_lid_hole
- name: usb_c_plug_access
  description: Preserve the source-box transverse opening width and sill; upward extent follows the rim. The matching
    hardware/clearance pair enforces the complete 3D plug envelope at nominal headroom.
  checks:
  - usb_c_plug_sill
  - usb_c_plug_width
- name: hdmi0_plug_access
  description: Preserve the source-box transverse opening width and sill; upward extent follows the rim. The matching
    hardware/clearance pair enforces the complete 3D plug envelope at nominal headroom.
  checks:
  - hdmi0_plug_sill
  - hdmi0_plug_width
- name: hdmi1_plug_access
  description: Preserve the source-box transverse opening width and sill; upward extent follows the rim. The matching
    hardware/clearance pair enforces the complete 3D plug envelope at nominal headroom.
  checks:
  - hdmi1_plug_sill
  - hdmi1_plug_width
- name: usb_a_upper_plug_access
  description: Preserve the source-box transverse opening width and sill; upward extent follows the rim. The matching
    hardware/clearance pair enforces the complete 3D plug envelope at nominal headroom.
  checks:
  - usb_a_upper_plug_sill
  - usb_a_upper_plug_width
- name: usb_a_lower_plug_access
  description: Preserve the source-box transverse opening width and sill; upward extent follows the rim. The matching
    hardware/clearance pair enforces the complete 3D plug envelope at nominal headroom.
  checks:
  - usb_a_lower_plug_sill
  - usb_a_lower_plug_width
- name: rj45_plug_access
  description: Preserve the source-box transverse opening width and sill; upward extent follows the rim. The matching
    hardware/clearance pair enforces the complete 3D plug envelope at nominal headroom.
  checks:
  - rj45_plug_sill
  - rj45_plug_width
- name: sd_card_slot_access
  description: Preserve the source-box transverse opening width and sill; upward extent follows the rim. The matching
    hardware/clearance pair enforces the complete 3D plug envelope at nominal headroom.
  checks:
  - sd_card_slot_sill
  - sd_card_slot_width
- name: closure_pair
  description: Nominal mating faces and gap. Absolute rim/lid elevations are intentionally not pinned across headroom
    edits; closure is required by construction and by nominal clearance acceptance.
  must_not_change: false
  checks:
  - base_rim
  - lid_underside
  - rim_lid_gap
  - lid_closure
- name: shell_floor
  description: Floor thickness and named surfaces; floor translates down when standoffHeight grows.
  must_not_change: false
  checks:
  - floor_exterior
  - floor_interior
  - floor_thickness
acceptance:
  bbox_tolerance: 0.1
  volume:
    expected: 57990.28723164135
    tolerance_rel: 0.005
    provenance: derived
    note: 'For the explicit open-slot profile in brief section 5: V=Ao*w+Ar*(r+h)-w*sum(Wi*(r-bi))+4*pi*rb^2*h-8*pi*rp^2*d+(Ao-4*pi*rl^2)*l.
      Ao=5844.4; Ar=942.4; r=21.55; h=5; w=2.4; d=5; l=4; sum(Wi)=96. This design formula is not a measured reference
      model.'
  surface_area:
    expected: 41529.124534011804
    tolerance_rel: 0.01
    provenance: derived
    note: Sb=2*Ao+Po*(r+h+w)+Pi*(r+h)-2*sum(Wi*(r-bi))+2*w*sum(r-bi)+8*pi*rb*h+16*pi*rp*d; Sl=2*(Ao-4*pi*rl^2)+Po*l+8*pi*rl*l.
      Po=394.8; Pi=286. Formula counts both separate solids and all blind-hole bottoms; see brief for symbols.
  center_of_mass:
    expected:
    - 41.77060948660255
    - 28.908221057599153
    - 10.568635377038204
    tolerance: 0.2
    provenance: derived
    note: 'Uniform-density geometric centroid, not a mass claim: sum(signed primitive volume * primitive centroid)/V.
      Add floor, wall-ring and four boss disks; subtract seven slot prisms and eight blind pilot cylinders; add
      the four-hole lid. Primitive centroids and formulas are in brief section 5.'
  solid_count: 2
  sections:
  - id: floor_section
    plane: z
    at: -6.2
    expect:
      area: 5844.4
      area_tolerance_rel: 0.01
      loops: 1
      holes: 0
    description: Through full floor, below the blind pilot ends; filled outer footprint O, area Ao.
  - id: standoff_section
    plane: z
    at: -2.5
    expect:
      area: 1014.7278675190552
      area_tolerance_rel: 0.01
      loops: 5
      holes: 4
    description: One shell region opened by the SD notch plus four annular standoffs; area Ar-12*w+4*pi*(rb^2-rp^2).
  - id: pcb_level_section
    plane: z
    at: 0.8
    expect:
      area: 913.5999999999997
      area_tolerance_rel: 0.01
      loops: 1
      holes: 0
    description: One shell region with SD notch; the PCB rectangle is void; area Ar-12*w.
  - id: all_ports_section
    plane: z
    at: 5
    expect:
      area: 711.9999999999997
      area_tolerance_rel: 0.01
      loops: 7
      holes: 0
    description: Seven open notches split the wall cross-section into seven regions; area Ar-96*w; corner pilots
      start higher.
  - id: rim_pilots_section
    plane: z
    at: 19
    expect:
      area: 692.3650459150634
      area_tolerance_rel: 0.01
      loops: 7
      holes: 4
    description: Seven rim regions with four corner-post pilot holes; area Ar-96*w-4*pi*rp^2.
  - id: lid_section
    plane: z
    at: 23.6
    expect:
      area: 5816.125666117691
      area_tolerance_rel: 0.01
      loops: 1
      holes: 4
    description: One lid region with four through holes; area Ao-4*pi*rl^2.
  faces:
  - name: floor_exterior
    plane: z
    at: -7.4
    normal: '-'
    area: 5844.4
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - 42.5
    - 28
  - name: floor_interior
    plane: z
    at: -5.0
    normal: +
    area: 4781.237178396008
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - 42.7525765134
    - 28
  - name: base_rim
    plane: z
    at: 21.55
    normal: +
    area: 692.3650459150634
    area_tolerance_rel: 0.01
    tolerance: 0.01
    mode: sum
  - name: lid_underside
    plane: z
    at: 21.6
    normal: '-'
    area: 5816.125666117691
    area_tolerance_rel: 0.01
    tolerance: 0.01
    mode: one
    center:
    - 42.5
    - 28
  - name: lid_exterior
    plane: z
    at: 25.6
    normal: +
    area: 5816.125666117691
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - 42.5
    - 28
  - name: standoff_1_seat
    plane: z
    at: 0
    normal: +
    area: 25.281966879763864
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - 3.5
    - 3.5
  - name: standoff_1_pilot_bottom
    plane: z
    at: -5.0
    normal: +
    area: 4.908738521234052
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - 3.5
    - 3.5
  - name: standoff_2_seat
    plane: z
    at: 0
    normal: +
    area: 25.281966879763864
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - 61.5
    - 3.5
  - name: standoff_2_pilot_bottom
    plane: z
    at: -5.0
    normal: +
    area: 4.908738521234052
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - 61.5
    - 3.5
  - name: standoff_3_seat
    plane: z
    at: 0
    normal: +
    area: 25.281966879763864
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - 3.5
    - 52.5
  - name: standoff_3_pilot_bottom
    plane: z
    at: -5.0
    normal: +
    area: 4.908738521234052
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - 3.5
    - 52.5
  - name: standoff_4_seat
    plane: z
    at: 0
    normal: +
    area: 25.281966879763864
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - 61.5
    - 52.5
  - name: standoff_4_pilot_bottom
    plane: z
    at: -5.0
    normal: +
    area: 4.908738521234052
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - 61.5
    - 52.5
  - name: corner_1_pilot_bottom
    plane: z
    at: 16.55
    normal: +
    area: 4.908738521234052
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - -4.5
    - -4.5
  - name: corner_2_pilot_bottom
    plane: z
    at: 16.55
    normal: +
    area: 4.908738521234052
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - 89.5
    - -4.5
  - name: corner_3_pilot_bottom
    plane: z
    at: 16.55
    normal: +
    area: 4.908738521234052
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - -4.5
    - 60.5
  - name: corner_4_pilot_bottom
    plane: z
    at: 16.55
    normal: +
    area: 4.908738521234052
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - 89.5
    - 60.5
  - name: usb_c_plug_sill
    plane: z
    at: 1.6
    normal: +
    area: 31.2
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - 11.2
    - -1.7
  - name: usb_c_plug_jamb_low
    plane: x
    at: 4.7
    normal: +
    area: 47.879999999999995
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - -1.7
    - 11.575
  - name: usb_c_plug_jamb_high
    plane: x
    at: 17.7
    normal: '-'
    area: 47.879999999999995
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - -1.7
    - 11.575
  - name: hdmi0_plug_sill
    plane: z
    at: 1.6
    normal: +
    area: 28.799999999999997
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - 25.8
    - -1.7
  - name: hdmi0_plug_jamb_low
    plane: x
    at: 19.8
    normal: +
    area: 47.879999999999995
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - -1.7
    - 11.575
  - name: hdmi0_plug_jamb_high
    plane: x
    at: 31.8
    normal: '-'
    area: 47.879999999999995
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - -1.7
    - 11.575
  - name: hdmi1_plug_sill
    plane: z
    at: 1.6
    normal: +
    area: 28.799999999999997
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - 39.2
    - -1.7
  - name: hdmi1_plug_jamb_low
    plane: x
    at: 33.2
    normal: +
    area: 47.879999999999995
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - -1.7
    - 11.575
  - name: hdmi1_plug_jamb_high
    plane: x
    at: 45.2
    normal: '-'
    area: 47.879999999999995
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - -1.7
    - 11.575
  - name: usb_a_upper_plug_sill
    plane: z
    at: 1.6
    normal: +
    area: 36.0
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - 86.7
    - 47.0
  - name: usb_a_upper_plug_jamb_low
    plane: y
    at: 39.5
    normal: +
    area: 47.879999999999995
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - 86.7
    - 11.575
  - name: usb_a_upper_plug_jamb_high
    plane: y
    at: 54.5
    normal: '-'
    area: 47.879999999999995
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - 86.7
    - 11.575
  - name: usb_a_lower_plug_sill
    plane: z
    at: 1.6
    normal: +
    area: 36.0
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - 86.7
    - 29.1
  - name: usb_a_lower_plug_jamb_low
    plane: y
    at: 21.6
    normal: +
    area: 47.879999999999995
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - 86.7
    - 11.575
  - name: usb_a_lower_plug_jamb_high
    plane: y
    at: 36.6
    normal: '-'
    area: 47.879999999999995
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - 86.7
    - 11.575
  - name: rj45_plug_sill
    plane: z
    at: 1.6
    normal: +
    area: 40.8
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - 86.7
    - 10.2
  - name: rj45_plug_jamb_low
    plane: y
    at: 1.7
    normal: +
    area: 47.879999999999995
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - 86.7
    - 11.575
  - name: rj45_plug_jamb_high
    plane: y
    at: 18.7
    normal: '-'
    area: 47.879999999999995
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - 86.7
    - 11.575
  - name: sd_card_slot_sill
    plane: z
    at: -3.0
    normal: +
    area: 28.799999999999997
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - -1.7
    - 28.0
  - name: sd_card_slot_jamb_low
    plane: y
    at: 22.0
    normal: +
    area: 58.92
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - -1.7
    - 9.275
  - name: sd_card_slot_jamb_high
    plane: y
    at: 34.0
    normal: '-'
    area: 58.92
    area_tolerance_rel: 0.01
    tolerance: 0.05
    mode: one
    center:
    - -1.7
    - 9.275
  cylinders:
  - name: standoff_1_boss
    point:
    - 3.5
    - 3.5
    - 0
    direction:
    - 0
    - 0
    - 1
    kind: pin
    diameter: 6.2
    radius_tolerance: 0.025
    axis_tolerance: 0.05
    length: 5.0
    length_tolerance: 0.05
    description: Stated/user-intent boss diameter; extent -standoffHeight..0. Its length may change in the standoffHeight
      edit.
    t_range:
    - -5.0
    - 0
  - name: standoff_1_pilot
    point:
    - 3.5
    - 3.5
    - 0
    direction:
    - 0
    - 0
    - 1
    kind: hole
    diameter: 2.5
    radius_tolerance: 0.025
    axis_tolerance: 0.05
    length: 5.0
    length_tolerance: 0.05
    description: 'Source requirement 2 and user intent: diameter 2.5, axis at the listed mounting center, blind
      from z=0 to -5.'
    t_range:
    - -5.0
    - 0
  - name: standoff_2_boss
    point:
    - 61.5
    - 3.5
    - 0
    direction:
    - 0
    - 0
    - 1
    kind: pin
    diameter: 6.2
    radius_tolerance: 0.025
    axis_tolerance: 0.05
    length: 5.0
    length_tolerance: 0.05
    description: Stated/user-intent boss diameter; extent -standoffHeight..0. Its length may change in the standoffHeight
      edit.
    t_range:
    - -5.0
    - 0
  - name: standoff_2_pilot
    point:
    - 61.5
    - 3.5
    - 0
    direction:
    - 0
    - 0
    - 1
    kind: hole
    diameter: 2.5
    radius_tolerance: 0.025
    axis_tolerance: 0.05
    length: 5.0
    length_tolerance: 0.05
    description: 'Source requirement 2 and user intent: diameter 2.5, axis at the listed mounting center, blind
      from z=0 to -5.'
    t_range:
    - -5.0
    - 0
  - name: standoff_3_boss
    point:
    - 3.5
    - 52.5
    - 0
    direction:
    - 0
    - 0
    - 1
    kind: pin
    diameter: 6.2
    radius_tolerance: 0.025
    axis_tolerance: 0.05
    length: 5.0
    length_tolerance: 0.05
    description: Stated/user-intent boss diameter; extent -standoffHeight..0. Its length may change in the standoffHeight
      edit.
    t_range:
    - -5.0
    - 0
  - name: standoff_3_pilot
    point:
    - 3.5
    - 52.5
    - 0
    direction:
    - 0
    - 0
    - 1
    kind: hole
    diameter: 2.5
    radius_tolerance: 0.025
    axis_tolerance: 0.05
    length: 5.0
    length_tolerance: 0.05
    description: 'Source requirement 2 and user intent: diameter 2.5, axis at the listed mounting center, blind
      from z=0 to -5.'
    t_range:
    - -5.0
    - 0
  - name: standoff_4_boss
    point:
    - 61.5
    - 52.5
    - 0
    direction:
    - 0
    - 0
    - 1
    kind: pin
    diameter: 6.2
    radius_tolerance: 0.025
    axis_tolerance: 0.05
    length: 5.0
    length_tolerance: 0.05
    description: Stated/user-intent boss diameter; extent -standoffHeight..0. Its length may change in the standoffHeight
      edit.
    t_range:
    - -5.0
    - 0
  - name: standoff_4_pilot
    point:
    - 61.5
    - 52.5
    - 0
    direction:
    - 0
    - 0
    - 1
    kind: hole
    diameter: 2.5
    radius_tolerance: 0.025
    axis_tolerance: 0.05
    length: 5.0
    length_tolerance: 0.05
    description: 'Source requirement 2 and user intent: diameter 2.5, axis at the listed mounting center, blind
      from z=0 to -5.'
    t_range:
    - -5.0
    - 0
  - name: corner_1_pilot
    point:
    - -4.5
    - -4.5
    - 0
    direction:
    - 0
    - 0
    - 1
    kind: hole
    diameter: 2.5
    radius_tolerance: 0.025
    axis_tolerance: 0.05
    length: 5.0
    length_tolerance: 0.05
    description: 5 mm blind pilot descending from moving base rim; no absolute axial t_range, so headroom may translate
      the hole without moving its axis or changing engagement.
  - name: corner_1_lid_hole
    point:
    - -4.5
    - -4.5
    - 0
    direction:
    - 0
    - 0
    - 1
    kind: hole
    diameter: 3
    radius_tolerance: 0.025
    axis_tolerance: 0.05
    length: 4.0
    length_tolerance: 0.05
    description: 3 mm through hole in 4 mm lid, coaxial with the corresponding corner-post pilot; no t_range because
      lid moves with headroom.
  - name: corner_2_pilot
    point:
    - 89.5
    - -4.5
    - 0
    direction:
    - 0
    - 0
    - 1
    kind: hole
    diameter: 2.5
    radius_tolerance: 0.025
    axis_tolerance: 0.05
    length: 5.0
    length_tolerance: 0.05
    description: 5 mm blind pilot descending from moving base rim; no absolute axial t_range, so headroom may translate
      the hole without moving its axis or changing engagement.
  - name: corner_2_lid_hole
    point:
    - 89.5
    - -4.5
    - 0
    direction:
    - 0
    - 0
    - 1
    kind: hole
    diameter: 3
    radius_tolerance: 0.025
    axis_tolerance: 0.05
    length: 4.0
    length_tolerance: 0.05
    description: 3 mm through hole in 4 mm lid, coaxial with the corresponding corner-post pilot; no t_range because
      lid moves with headroom.
  - name: corner_3_pilot
    point:
    - -4.5
    - 60.5
    - 0
    direction:
    - 0
    - 0
    - 1
    kind: hole
    diameter: 2.5
    radius_tolerance: 0.025
    axis_tolerance: 0.05
    length: 5.0
    length_tolerance: 0.05
    description: 5 mm blind pilot descending from moving base rim; no absolute axial t_range, so headroom may translate
      the hole without moving its axis or changing engagement.
  - name: corner_3_lid_hole
    point:
    - -4.5
    - 60.5
    - 0
    direction:
    - 0
    - 0
    - 1
    kind: hole
    diameter: 3
    radius_tolerance: 0.025
    axis_tolerance: 0.05
    length: 4.0
    length_tolerance: 0.05
    description: 3 mm through hole in 4 mm lid, coaxial with the corresponding corner-post pilot; no t_range because
      lid moves with headroom.
  - name: corner_4_pilot
    point:
    - 89.5
    - 60.5
    - 0
    direction:
    - 0
    - 0
    - 1
    kind: hole
    diameter: 2.5
    radius_tolerance: 0.025
    axis_tolerance: 0.05
    length: 5.0
    length_tolerance: 0.05
    description: 5 mm blind pilot descending from moving base rim; no absolute axial t_range, so headroom may translate
      the hole without moving its axis or changing engagement.
  - name: corner_4_lid_hole
    point:
    - 89.5
    - 60.5
    - 0
    direction:
    - 0
    - 0
    - 1
    kind: hole
    diameter: 3
    radius_tolerance: 0.025
    axis_tolerance: 0.05
    length: 4.0
    length_tolerance: 0.05
    description: 3 mm through hole in 4 mm lid, coaxial with the corresponding corner-post pilot; no t_range because
      lid moves with headroom.
  planes: []
  dimensions:
  - name: overall_x
    axis: x
    expected: 102
    tolerance: 0.1
    description: boardLength+2*(edgeClearance+cornerPostWidth).
  - name: overall_y
    axis: y
    expected: 73
    tolerance: 0.1
    description: boardWidth+2*(edgeClearance+cornerPostWidth).
  - name: overall_z
    axis: z
    expected: 33
    tolerance: 0.1
    description: pcbThickness+headroom+lidThickness+standoffHeight+wallThickness; includes both parts.
  - name: floor_thickness
    axis: z
    expected: 2.4
    tolerance: 0.05
    description: wallThickness; source requirement >=2 mm.
    between:
    - floor_exterior
    - floor_interior
  - name: lid_thickness
    axis: z
    expected: 4.0
    tolerance: 0.05
    description: lidThickness; source requirement >=2 mm.
    between:
    - lid_underside
    - lid_exterior
  - name: rim_lid_gap
    axis: z
    expected: 0.05
    tolerance: 0.01
    description: closureGap=0.05; requirements also independently cap closest base/lid separation at 0.1 mm.
    between:
    - base_rim
    - lid_underside
  - name: standoff_1_pilot_depth
    axis: z
    expected: 5.0
    tolerance: 0.05
    description: pilotDepth=5, meeting source >=5; both named face positions are fixed.
    between:
    - standoff_1_seat
    - standoff_1_pilot_bottom
  - name: standoff_1_height
    axis: z
    expected: 5.0
    tolerance: 0.05
    description: standoffHeight; seat remains z=0 when floor moves.
    between:
    - floor_interior
    - standoff_1_seat
  - name: standoff_2_pilot_depth
    axis: z
    expected: 5.0
    tolerance: 0.05
    description: pilotDepth=5, meeting source >=5; both named face positions are fixed.
    between:
    - standoff_2_seat
    - standoff_2_pilot_bottom
  - name: standoff_2_height
    axis: z
    expected: 5.0
    tolerance: 0.05
    description: standoffHeight; seat remains z=0 when floor moves.
    between:
    - floor_interior
    - standoff_2_seat
  - name: standoff_3_pilot_depth
    axis: z
    expected: 5.0
    tolerance: 0.05
    description: pilotDepth=5, meeting source >=5; both named face positions are fixed.
    between:
    - standoff_3_seat
    - standoff_3_pilot_bottom
  - name: standoff_3_height
    axis: z
    expected: 5.0
    tolerance: 0.05
    description: standoffHeight; seat remains z=0 when floor moves.
    between:
    - floor_interior
    - standoff_3_seat
  - name: standoff_4_pilot_depth
    axis: z
    expected: 5.0
    tolerance: 0.05
    description: pilotDepth=5, meeting source >=5; both named face positions are fixed.
    between:
    - standoff_4_seat
    - standoff_4_pilot_bottom
  - name: standoff_4_height
    axis: z
    expected: 5.0
    tolerance: 0.05
    description: standoffHeight; seat remains z=0 when floor moves.
    between:
    - floor_interior
    - standoff_4_seat
  - name: corner_1_pilot_depth
    axis: z
    expected: 5.0
    tolerance: 0.05
    description: pilotDepth=5; separation is invariant when both elevations move with headroom.
    between:
    - corner_1_pilot_bottom
    - base_rim
  - name: corner_2_pilot_depth
    axis: z
    expected: 5.0
    tolerance: 0.05
    description: pilotDepth=5; separation is invariant when both elevations move with headroom.
    between:
    - corner_2_pilot_bottom
    - base_rim
  - name: corner_3_pilot_depth
    axis: z
    expected: 5.0
    tolerance: 0.05
    description: pilotDepth=5; separation is invariant when both elevations move with headroom.
    between:
    - corner_3_pilot_bottom
    - base_rim
  - name: corner_4_pilot_depth
    axis: z
    expected: 5.0
    tolerance: 0.05
    description: pilotDepth=5; separation is invariant when both elevations move with headroom.
    between:
    - corner_4_pilot_bottom
    - base_rim
  - name: usb_c_plug_width
    axis: x
    expected: 13.0
    tolerance: 0.05
    description: Exact transverse extent of the corresponding source plug box; no extra lateral plug allowance is
      assumed.
    between:
    - usb_c_plug_jamb_low
    - usb_c_plug_jamb_high
  - name: hdmi0_plug_width
    axis: x
    expected: 12.0
    tolerance: 0.05
    description: Exact transverse extent of the corresponding source plug box; no extra lateral plug allowance is
      assumed.
    between:
    - hdmi0_plug_jamb_low
    - hdmi0_plug_jamb_high
  - name: hdmi1_plug_width
    axis: x
    expected: 12.0
    tolerance: 0.05
    description: Exact transverse extent of the corresponding source plug box; no extra lateral plug allowance is
      assumed.
    between:
    - hdmi1_plug_jamb_low
    - hdmi1_plug_jamb_high
  - name: usb_a_upper_plug_width
    axis: y
    expected: 15.0
    tolerance: 0.05
    description: Exact transverse extent of the corresponding source plug box; no extra lateral plug allowance is
      assumed.
    between:
    - usb_a_upper_plug_jamb_low
    - usb_a_upper_plug_jamb_high
  - name: usb_a_lower_plug_width
    axis: y
    expected: 15.0
    tolerance: 0.05
    description: Exact transverse extent of the corresponding source plug box; no extra lateral plug allowance is
      assumed.
    between:
    - usb_a_lower_plug_jamb_low
    - usb_a_lower_plug_jamb_high
  - name: rj45_plug_width
    axis: y
    expected: 17.0
    tolerance: 0.05
    description: Exact transverse extent of the corresponding source plug box; no extra lateral plug allowance is
      assumed.
    between:
    - rj45_plug_jamb_low
    - rj45_plug_jamb_high
  - name: sd_card_slot_width
    axis: y
    expected: 12.0
    tolerance: 0.05
    description: Exact transverse extent of the corresponding source plug box; no extra lateral plug allowance is
      assumed.
    between:
    - sd_card_slot_jamb_low
    - sd_card_slot_jamb_high
  solids:
  - name: base
    contains_point:
    - 42.5
    - 28
    - -6
    volume:
      expected: 34725.78456717059
      tolerance_rel: 0.005
      provenance: derived
      note: Ao*w+Ar*(r+h)-w*sum(Wi*(r-bi))+4*pi*rb^2*h-8*pi*rp^2*d.
    description: Exact source-contained point; connected shell, floor, standoffs and square corner posts.
  - name: lid
    contains_point:
    - 42.5
    - 28
    - 24.6
    volume:
      expected: 23264.502664470765
      tolerance_rel: 0.005
      provenance: derived
      note: (Ao-4*pi*rl^2)*lidThickness at nominal headroom.
    description: Exact source-contained point; separate flat cover with four through holes.
  hardware:
  - name: pcb_slab
    kind: box
    min:
    - 0
    - 0
    - 0
    max:
    - 85
    - 56
    - 1.6
    description: Source requirement 3 PCB slab, copied exactly; not exported as a body.
  - name: bottom_components
    kind: box
    min:
    - 0
    - 0
    - -3.0
    max:
    - 85
    - 56
    - 0
    exclude_cylinders:
    - point:
      - 3.5
      - 3.5
      - -3
      direction:
      - 0
      - 0
      - 1
      radius: 3.1
      length: 3
    - point:
      - 61.5
      - 3.5
      - -3
      direction:
      - 0
      - 0
      - 1
      radius: 3.1
      length: 3
    - point:
      - 3.5
      - 52.5
      - -3
      direction:
      - 0
      - 0
      - 1
      radius: 3.1
      length: 3
    - point:
      - 61.5
      - 52.5
      - -3
      direction:
      - 0
      - 0
      - 1
      radius: 3.1
      length: 3
    description: Source lower keep-out minus four component-free cylinders, radius 3.1, on the mounting axes. Cylinder
      exclusions apply only to this bottom keep-out.
  - name: top_components
    kind: box
    min:
    - 0
    - 0
    - 1.6
    max:
    - 85
    - 56
    - 21.6
    description: Source top envelope; checked at nominal headroom 20 only.
  - name: board_edge_clearance
    kind: box
    min:
    - -0.5
    - -0.5
    - 0
    max:
    - 85.5
    - 56.5
    - 21.6
    description: Derived rectangular lateral expansion by edgeClearance, up to the nominal roof. This checks edge
      clearance without incorrectly demanding a 0.5 mm gap from the standoffs that contact the PCB bottom.
  - name: usb_c_plug
    kind: box
    min:
    - 4.699999999999999
    - -25.0
    - 1.6
    max:
    - 17.7
    - 0.0
    - 8.6
    description: Verbatim requirement 4 plug/card envelope in board coordinates; all enclosure material must clear
      it.
  - name: hdmi0_plug
    kind: box
    min:
    - 19.8
    - -25.0
    - 1.6
    max:
    - 31.8
    - 0.0
    - 8.1
    description: Verbatim requirement 4 plug/card envelope in board coordinates; all enclosure material must clear
      it.
  - name: hdmi1_plug
    kind: box
    min:
    - 33.2
    - -25.0
    - 1.6
    max:
    - 45.2
    - 0.0
    - 8.1
    description: Verbatim requirement 4 plug/card envelope in board coordinates; all enclosure material must clear
      it.
  - name: usb_a_upper_plug
    kind: box
    min:
    - 85.0
    - 39.5
    - 1.6
    max:
    - 110.0
    - 54.5
    - 18.6
    description: Verbatim requirement 4 plug/card envelope in board coordinates; all enclosure material must clear
      it.
  - name: usb_a_lower_plug
    kind: box
    min:
    - 85.0
    - 21.6
    - 1.6
    max:
    - 110.0
    - 36.6
    - 18.6
    description: Verbatim requirement 4 plug/card envelope in board coordinates; all enclosure material must clear
      it.
  - name: rj45_plug
    kind: box
    min:
    - 85.0
    - 1.6999999999999993
    - 1.6
    max:
    - 110.0
    - 18.7
    - 16.6
    description: Verbatim requirement 4 plug/card envelope in board coordinates; all enclosure material must clear
      it.
  - name: sd_card_slot
    kind: box
    min:
    - -25.0
    - 22.0
    - -3.0
    max:
    - 0.0
    - 34.0
    - 0.0
    description: Verbatim requirement 4 plug/card envelope in board coordinates; all enclosure material must clear
      it.
  clearances:
  - name: clear_pcb_slab
    a: all
    b: pcb_slab
    min_gap: 0
    interference_tolerance: 0.0001
    description: Zero material interference. Box contact at a datum boundary is permitted; positive-volume penetration
      is not.
  - name: clear_bottom_components
    a: all
    b: bottom_components
    min_gap: 0
    interference_tolerance: 0.0001
    description: Zero material interference. Box contact at a datum boundary is permitted; positive-volume penetration
      is not.
  - name: clear_top_components
    a: all
    b: top_components
    min_gap: 0
    interference_tolerance: 0.0001
    description: Zero material interference. Box contact at a datum boundary is permitted; positive-volume penetration
      is not.
  - name: clear_board_edge_clearance
    a: all
    b: board_edge_clearance
    min_gap: 0
    interference_tolerance: 0.0001
    description: Zero material interference. Expanded footprint encodes the stated 0.5 mm edge clearance.
  - name: clear_usb_c_plug
    a: all
    b: usb_c_plug
    min_gap: 0
    interference_tolerance: 0.0001
    description: Zero material interference. Box contact at a datum boundary is permitted; positive-volume penetration
      is not.
  - name: clear_hdmi0_plug
    a: all
    b: hdmi0_plug
    min_gap: 0
    interference_tolerance: 0.0001
    description: Zero material interference. Box contact at a datum boundary is permitted; positive-volume penetration
      is not.
  - name: clear_hdmi1_plug
    a: all
    b: hdmi1_plug
    min_gap: 0
    interference_tolerance: 0.0001
    description: Zero material interference. Box contact at a datum boundary is permitted; positive-volume penetration
      is not.
  - name: clear_usb_a_upper_plug
    a: all
    b: usb_a_upper_plug
    min_gap: 0
    interference_tolerance: 0.0001
    description: Zero material interference. Box contact at a datum boundary is permitted; positive-volume penetration
      is not.
  - name: clear_usb_a_lower_plug
    a: all
    b: usb_a_lower_plug
    min_gap: 0
    interference_tolerance: 0.0001
    description: Zero material interference. Box contact at a datum boundary is permitted; positive-volume penetration
      is not.
  - name: clear_rj45_plug
    a: all
    b: rj45_plug
    min_gap: 0
    interference_tolerance: 0.0001
    description: Zero material interference. Box contact at a datum boundary is permitted; positive-volume penetration
      is not.
  - name: clear_sd_card_slot
    a: all
    b: sd_card_slot
    min_gap: 0
    interference_tolerance: 0.0001
    description: Zero material interference. Box contact at a datum boundary is permitted; positive-volume penetration
      is not.
  - name: lid_closure
    a: base
    b: lid
    min_gap: 0
    max_gap: 0.1
    interference_tolerance: 0.0001
    description: 'Source requirement 5: zero interference and closest gap <=0.1 mm; design gap 0.05 mm keeps the
      solids separate.'
  passages: []
  thickness:
  - name: shell_wall_floor_lid_p05
    min: 2
    stat: p05
    samples: 6000
    description: 'Verbatim requirement 7: minimum wall/floor thickness 2.0 mm using the fifth percentile of inward
      STL ray casts. Include shell, floor, lid and opening edges; do not substitute a global minimum. The four 6.2/2.5
      standoff annuli are the accepted 1.85 mm exception.'
  probes:
  - name: required_body_points
    state: solid
    points:
    - - 42.5
      - 28
      - -6
    - - 42.5
      - 28
      - 24.6
    description: Exact two source selectors, also independently assigned to named acceptance solids.
  - name: board_and_component_void
    state: void
    points:
    - - 42.5
      - 28
      - 0.8
    - - 42.5
      - 28
      - -1.5
    - - 42.5
      - 28
      - 10
    description: Interior probes well clear of inferred walls; hardware clearances check the complete volumes.
  - name: plug_paths_void
    state: void
    points:
    - *id001
    - *id002
    - *id003
    - *id004
    - *id005
    - *id006
    - *id007
    description: One point in each wall opening, at the middle of the specified plug height and the middle of wall
      thickness.
  - name: standoff_material
    state: solid
    points:
    - - 5.675
      - 3.5
      - -2.5
    - - 63.675
      - 3.5
      - -2.5
    - - 5.675
      - 52.5
      - -2.5
    - - 63.675
      - 52.5
      - -2.5
    description: 'Mid-annulus radial probes: (3.1+1.25)/2=2.175; 0.925 mm from both radial surfaces.'
  - name: standoff_pilots_void
    state: void
    points:
    - - 3.5
      - 3.5
      - -2.5
    - - 61.5
      - 3.5
      - -2.5
    - - 3.5
      - 52.5
      - -2.5
    - - 61.5
      - 52.5
      - -2.5
    description: Mid-depth points on all four 2.5 mm pilot axes.
  - name: corner_pilots_void
    state: void
    points:
    - - -4.5
      - -4.5
      - 19.05
    - - 89.5
      - -4.5
      - 19.05
    - - -4.5
      - 60.5
      - 19.05
    - - 89.5
      - 60.5
      - 19.05
    description: Nominal mid-depth points on all four corner-post pilot axes.
  - name: lid_holes_void
    state: void
    points:
    - - -4.5
      - -4.5
      - 23.6
    - - 89.5
      - -4.5
      - 23.6
    - - -4.5
      - 60.5
      - 23.6
    - - 89.5
      - 60.5
      - 23.6
    description: Nominal mid-thickness points on all four lid clearance axes.
  - name: shell_material
    state: solid
    points:
    - - 50
      - -1.7
      - 10
    - - 42.5
      - 57.7
      - 10
    description: Uninterrupted front/back walls; each probe is 1.2 mm from either side, greater than wallThickness
      tolerance 0.2 mm.
  cylinder_counts:
  - name: standoff_boss_count
    diameter: 6.2
    radius_tolerance: 0.025
    kind: pin
    direction:
    - 0
    - 0
    - 1
    expected: 4
    description: Only four circular bosses are modeled; corner posts are square.
  - name: pilot_count
    diameter: 2.5
    radius_tolerance: 0.025
    kind: hole
    direction:
    - 0
    - 0
    - 1
    expected: 8
    description: Four board standoff pilots plus four corner-post pilots.
  - name: lid_clearance_count
    diameter: 3
    radius_tolerance: 0.025
    kind: hole
    direction:
    - 0
    - 0
    - 1
    expected: 4
    description: Four through holes in the separate lid.
  gears: []
  meshes: []
  deviation: null
  blockout:
    volume_min: 235000
    volume_max: 255000
  export_volume_tolerance_rel: 0.002
references:
- path: sources/rpi5-enclosure-requirements.md
  kind: text
  role: authoritative
  sha256: 72e326f321f0ffa4158fc6d56004c15d300f2feaf60b46eae2e5a0fe399fa9fe
  units: mm
  revision: Provided requirements; no revision/date stated
  note: Primary design authority, including exact keep-outs and plug boxes. User intent chooses exact 6.2 mm bosses
    and 3 mm lid holes within its bounds.
- path: sources/rpi5-drawing-01.png
  kind: drawing
  role: authoritative
  sha256: 09a70271b05c4422065de1e566a25ea231fbc835438e1f59d5b5e036148cc7e3
  units: mm
  revision: RP-008347-DS-1 identifier per requirements; no separate revision shown
  note: Authoritative board-interface drawing; explicitly approximate. Native raster is 2573 x 1819 px. Read board
    and connector dimensions; do not infer enclosure geometry from it.
open_questions:
- 'Q1: Are the inferred 2.4 mm walls/floor, 5 mm standoff height, 4 mm lid, and 8 mm square external corner posts
  acceptable? They select a concrete 102 x 73 x 33 mm enclosure; no external size or corner-post coordinates are
  specified by the sources.'
- 'Q2: Are open-top cable notches, closed above by the removable lid, and a nominal 0.05 mm rim gap acceptable?
  The sources specify plug clearance and a maximum closure gap, but do not specify closed-window styling, a locating
  lip, sealing, or ingress protection.'
- 'Q3: What cable-plug and board manufacturing allowances should be added after physical fit inspection? The supplied
  drawing explicitly calls its dimensions approximate; the contract preserves the supplied plug boxes and adds no
  unrequested plug margin.'
- 'Q4: Which FFF polymer, nozzle/layer settings, screw specification and screw lengths will be used? Material/density
  and printer compensation are unspecified; the required 2.5 mm pilots, 3 mm lid holes and support-free geometry
  still need print and assembly confirmation.'