Overall bbox 141 x 147 x 16.5 mm (X -70.5..70.5, Y -70.5..76.5, Z -0..16.5); total volume 141712 mm^3; 3 part(s)
- base: 1 solid(s), 237 faces, valid; size 141 x 141 x 16.5; bbox X -70.5..70.5 Y -70.5..70.5 Z -0..16.5; volume 102146 mm^3
    thinnest wall ~0.025 mm at (-22.8536, -2.7009, 0.25)
    rounded-edge radii: 6
    ! 2 free edge(s) on a solid part
    ! thinnest wall ~0.03 mm at (-22.8536, -2.7009, 0.25) (a sliver; thicken it, or say why it is intended)
    ! 3 knife edge(s) thinner than 30 deg (feather edges that print/break badly): 14 deg over 0.5 mm at (-22.9, -2.8, 0.2); 14 deg over 0.5 mm at (-17.8, -2.8, 0.2); 30 deg over 0.5 mm at (-20.3, 1.2, 0.2)
- lid: 1 solid(s), 10 faces, valid; size 135.4 x 144.2 x 2; bbox X -67.7..67.7 Y -67.7..76.5 Z 12.7..14.7; volume 39042.5 mm^3
    thinnest wall ~2 mm at (14.0608, -10.6963, 12.7)
    rounded-edge radii: 2
- marble: 1 solid(s), 1 faces, valid; size 10 x 10 x 10; bbox X -65..-55 Y -65..-55 Z 2.1..12.1; volume 523.599 mm^3
    thinnest wall ~10 mm at (-63.1226, -56.2196, 6.121)
    ! 2 free edge(s) on a solid part
Clearances: base<->lid 0.2 mm, base<->marble 0.3 mm, lid<->marble 0.6 mm
Checks (verify):
  [PASS] every cell reachable (perfect maze): 81 (expected 81 ±0.01)
  [PASS] passages = cells - 1: 80 (expected 80 ±0.01)
  [PASS] solution length (cells): 56
  [PASS] corridor clear width: 13 (expected >= 12)
  [PASS] walls tall enough to guide marble: 9 (expected >= 8)
  [FAIL] lid above marble top: 9.7 (expected >= 10.5)
  [PASS] lid does not overlap base: 0 (expected 0 ±0.001)
  [PASS] lid clears walls/groove: 0.2 (expected >= 0.15)
  [PASS] marble does not overlap base: 0 (expected 0 ±0.001)
  [PASS] fits a 220 mm bed: 141 (expected <= 220)
  [PASS] base is one solid: 1 (expected 1 ±0.01)
  [FAIL] thinnest wall: 0.025 (expected >= 1)
Bill of materials:
  1. base x1 (-, 102146 mm^3)
  2. lid x1 (-, 39042.5 mm^3)
  3. marble x1 (-, 523.6 mm^3)