Overall bbox 141 x 147 x 18 mm (X -70.5..70.5, Y -70.5..76.5, Z -0..18); total volume 147905 mm^3; 3 part(s)
- base: 1 solid(s), 141 faces, valid; size 141 x 141 x 18; bbox X -70.5..70.5 Y -70.5..70.5 Z -0..18; volume 108339 mm^3
    thinnest wall ~1.373 mm at (-1.405, 60.0343, 0.0)
    rounded-edge radii: 6
    ! 2 free edge(s) on a solid part
    ! thinnest wall ~1.37 mm at (-1.405, 60.0343, 0.0) (below the 1.5 mm FDM minimum; thicken it, or say why it is intended)
- 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 14.2..16.2; volume 39042.5 mm^3
    thinnest wall ~2 mm at (14.0608, -10.6963, 14.2)
    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 2.1 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: 10.5 (expected >= 8)
  [PASS] lid above marble top: 11.2 (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)
  [PASS] thinnest wall: 1.373 (expected >= 1)
Bill of materials:
  1. base x1 (-, 108339 mm^3)
  2. lid x1 (-, 39042.5 mm^3)
  3. marble x1 (-, 523.6 mm^3)