Build notes
Big lobed pumpkin with one-piece snap-off lid (Ender-3 Pro)
Generate (trimesh + manifold3d from /workspace/meshvenv):
../meshvenv/bin/python make_pumpkin_big.py 215 pumpkin_215.stl # also 150, 100
Slice (PrusaSlicer CLI, base profile ../ender3_pla_210_60.ini = 210 C / 60 C):
prusa-slicer --load ../ender3_pla_210_60.ini --layer-height 0.28 --perimeters 2 \
--fill-density 10% --fill-pattern gyroid --center 117.5,117.5 -g pumpkin_215.stl \
-o pumpkin_215_028mm_210_60.gcode
Preview: ../meshvenv/bin/python render_preview.py pumpkin_215.stl 91.6 pumpkin_big_preview.png (91.6 = funnel tip z printed by the generator for D=215.)
Design: 11 lobes, oblate (H/D ~0.7 + stem), flat base, 1.8 mm walls, 2.4 mm floor. Cavity ceiling is a 45 deg cone, so the shallow top dome is a gyroid-infilled wedge (no flat ceilings). Lid: knife-style circular cut = 45 deg funnel (narrow at bottom) so the lid is a self-centering plug that sits back in the body; 0.4 mm normal gap (~0.57 mm vertical); 8 breakaway tabs 1.2x1.2 mm placed at the lid's lowest ring to anchor it. Break with a thin blade/screwdriver in the cut line, twist off.
| file | size (mm) | layer | time | filament |
|---|
| pumpkin_100_028mm_210_60.gcode | 99 x 99 x 85 | 028mm | 5h 31m 48s | 79.28 g / 26.6 m |
| pumpkin_100_02mm_210_60.gcode | 99 x 99 x 85 | 02mm | 6h 44m 12s | 74.73 g / 25.1 m |
| pumpkin_150_028mm_210_60.gcode | 148 x 149 x 128 | 028mm | 13h 26m 40s | 203.02 g / 68.1 m |
| pumpkin_150_02mm_210_60.gcode | 148 x 149 x 128 | 02mm | 16h 33m 6s | 192.60 g / 64.6 m |
| pumpkin_215_028mm_210_60.gcode | 213 x 214 x 183 | 028mm | 1d 6h 29m 47s | 482.23 g / 161.7 m |
| pumpkin_215_02mm_210_60.gcode | 213 x 214 x 183 | 02mm | 1d 13h 52m 9s | 460.30 g / 154.3 m |
All gcode verified: nozzle max 210 C (M104/M109), bed 60 C. Nothing uploaded/printed.
Risks: 30-38 h job for the big one (single failure = big loss); 0.28 mm slices warn "floating bridge anchors" (lid's first rings start 0.57 mm above the body funnel between tabs - expect slight sag/strings that act as an extra frangible skin); 150 mm @0.2 warns "collapsing overhang"; stem tip curls a bit; footprint ~130 mm dia (big) - clean bed, brim optional; tall 183 mm print - watch for wobble late. Top dome wedge is 10% gyroid inside, so the lid is a solid-feeling plug and the opening into the cavity is ~48 mm (big) / 33 mm (150) / 21 mm (100) - fits an LED tea light only on the big one.
