Real-world units
All dimensions are physical (mm / inch) and match the exported file 1:1 — what you set is what gets cut.
Cut lines and engraving
Red strokes are cut, blue strokes are engraved as lines, blue fills are engraved as areas. Colours are read by the machine, not by the eye.
Assembly order
Cut the base first, then the inserts. Test-fit before glue: a 0.1 mm difference decides whether the joint holds.