The model
The set consists of eight bricks (1×1, 1×2, 1×4, 2×2, 2×3, 2×4, 2×6, 2×8), the same eight sizes as flat plates, 45° roof bricks in 2×2 and 2×4 and a baseplate with 16 × 16 studs. Grid 8.0 mm, brick height 9.6 mm, plate height 3.2 mm, studs Ø 4.8 × 1.8 mm, wall 1.2 mm.
The bricks are hollow underneath. Bricks from 2 wide have tubes (outer Ø 6.51 mm) and small clamping ribs on the walls, 1×n bricks have pins (Ø 3.4 mm) and end ribs. The outer size is 0.1 mm smaller per side (n · 8 − 0.2 mm) so the bricks have room next to each other.
Checked by calculation: the stud sits with about 0.1 mm of interference between tube, pin or rib and wall; that creates the clamping. The fit tests (brick on brick, offset, roof brick, brick on baseplate) show only this intended interference as intersecting volume. The clamping force depends on the printer; if too tight, scale the file to 99 %.
View print notes (German)
Print notes included in German; part names are self-explanatory.