2026-10-17 9:12 AM ET — Carrier v4c print result
- v4c carrier printed perfectly face-up; earlier bottom defects resolved (likely floating cantilevers ripping layers, not nozzle). SuperTack bottom is perfectly smooth.
- Decision: v4d flips carrier back to face-down (board face on bed) with teardrops flipped; nozzle left Standard in 3MF (the designer sets HF).
Oct 17, 2026 9:16 AM ET: Jig v4d carrier (board face down again)
- Folder cad/jig_v4d/. Files:
- jig_v4d.py (from v4c), jig_v4d.step (base + carrier + ghost board; base unchanged)
- jig_v4d_carrier.stl (print orientation, board face on bed)
- jig_v4d_carrier.3mf, make_3mf.py
- verify.py, render.py, preview_carrier_print_orientation.png
- PRINT_NOTES.md
- Geometry vs v4c:
- Carrier prints with the board-support face down on SuperTack.
- Dowel and clamp-insert holes are blind holes open at the bed face. Their ends are now 90° cones (truncated at Ø0.6), so the ceilings build themselves.
- Ø2.8 dowel depth went 10 → 9.5 to keep 1.1 mm of skin under the cone. Ø1.8 stays at 9.0; the reaming plan is unchanged.
- Edge teardrops are mirrored (point at −Z in part coordinates = up as printed).
- Chamfer is 0.5 mm on the board-face perimeter only, clear of the dowels. No chamfer on the base-mating face.
- M4 slots and M6 notches go straight through. No supports.
- 3MF:
- project_settings.config is byte-identical to jig_v4c_carrier_safe.3mf (nozzle Standard, Supertack, black, v4b settings).
- Only the geometry and model_settings differ. The 9 modifiers at 100% infill are repositioned.
- the designer sets Nozzle flow = High Flow himself.
- Validated:
- STEP reimports as 3 valid solids; STL watertight.
- 17 probe points pass.
- BS CLI --info: manifold = yes, 160x160x12.
- Slice: 3 h 42 m / 217 g at Standard flow.
2026-10-17 9:36 AM ET — v4d print + flatness reference
- v4d carrier (face-down) printing; first layer clean, no issues.
- the designer has a professionally ground surface plate available as a flatness reference; carrier faces can be lapped (sandpaper on plate, figure-eight) if needed.
