The Voron Stealthburner printhead front housing, Rapido V2 variant, from renders and section drawings.
| File | Kind | Size |
|---|---|---|
| voron-sb-duct.step | STEP | 0.8 MB |
| voron-sb-duct.stl | STL | 0.9 MB |
contract.yaml (design contract)
Reconstruct the Voron Stealthburner printhead front housing (Rapido V2 variant) as editable, parameterized KCL from the attached renders, section drawings and dimension sheet, in the reference frame (x symmetric about 0, back mating face y = 0 with the part extending to y = -27.4, z from 2.37 at the nozzle end to 61.5 at the top). The interior matters most: two mirrored closed part-cooling ducts from the top fan inlets down to the forked nozzle outlets (about 8 x 19 mm channels with ~1 mm walls, never connected to each other), the hotend cavity (about 26 x 35 mm, open to the back and the nozzle end) with the round hotend-fan opening on the front, and the screw holes. Declare the duct probe points as void probes, the sections as acceptance sections, the ducts as passages and the wall minimum as a thickness check. Cosmetic styling, text and grille are optional. One solid; export STEP and STL. Reference CAD is evaluator-only.
features, edit_robustness, export_integrity. The geometry and handoff are published as built; read each gate below before printing.
| Tier | Gate | Result | Evidence |
|---|---|---|---|
| A | contract_provenance Contract validates; stated/measured sources resolve to bundle files; no blocking open questions; interfaces pinned by checks | PASS | designs/voron-sb-duct/contract.yaml: 57 parameters {'stated': 41, 'derived': 6, 'measured': 10}; sources unresolved {}; unanchored 0 |
| A | envelope Bounding box of the exported STEP equals the contract envelope | PASS | results/voron-sb-duct/inspect.json bbox.max_error = 0.0 (tol 0.1) |
| A | mass_properties Volume, surface area and centre of mass within contract tolerance (independent STEP measurement) | PASS | results/voron-sb-duct/inspect.json volume = None vs None |
| A | features Every required feature, section, named face, cylinder axis, plane, dimension, body, clearance, passage, wall and gear check verified on the STEP | FAIL | results/voron-sb-duct/inspect.json features: 6/17 ok; failed required ['leftCoolingDuct', 'rightCoolingDuct', 'nozzleForks', 'hotendPocket', 'hotendFanOpening', 'topSteppedFasteners', 'lowerMounts', 'locatedCurvedTransitions', 'rearMatingPatches', 'nozzleUnder… Means: a hole, wall, cavity, channel or face is missing or in the wrong place |
| A | reference_fidelity Deviation from the reference model within the contract band (when a reference exists) | n/a | results/voron-sb-duct/inspect.json deviation.p95 = None hausdorff = None silhouette_iou_min = None |
| B | export_agreement KCL (Zoo), STEP (OpenCascade) and STL (trimesh) volumes agree | PASS | results/voron-sb-duct/inspect.json agreement kcl=57791.52238056137 step=57786.52656775332 stl=57791.521597478364 (rel tol 0.002) |
| B | edit_robustness Declared parameter edits rebuild with the expected effect, undriven interfaces stay put, sweeps regenerate, infeasible values are refused; baseline re-export hash unchanged | FAIL | results/voron-sb-duct/edit.json 0/2 edit tests ok; restore.ok = True Means: the model is not parametric in the contract's terms, an edit moved an interface it does not own, an impossible value built silently, or the deliverable changed |
| B | source_hygiene KCL 2, mm, formatted, lint-clean, named parameters match the contract, asserts present | PASS | results/voron-sb-duct/verify.json hygiene: kcl2=True mm=True legacy=[] params_ok=True asserts=137 |
| C | export_integrity Deterministic STEP (two exports identical), valid B-rep, expected solid count, watertight STL (solid shells == solids) | FAIL | results/voron-sb-duct/export.json step.deterministic = True sha256 d5cf02a057a3; stl=present; glb=present Means: the exchange files are not trustworthy deliverables |
| C | traceability Every stage JSON present with tool versions, git head, Codex thread ids, engine-call ledger; no --allow-errors | PASS | stages present: {'plan': True, 'model': True, 'verify': True, 'export': True, 'inspect': True, 'edit': True} |
| C | evidence_separation Contract agreement, reference agreement and physical validation are reported as separate verdicts | PASS | results/voron-sb-duct/inspect.json carries contract checks (volume/bbox/features) and a separate deviation block (reference = None) |
| C | independence The KCL is editable construction: no import of reference geometry, sketch blocks and features present | PASS | results/voron-sb-duct/verify.json hygiene.forbidden_imports = [] sketch_blocks = 20 feature_ops = 81 lines = 1847 |