Box joint (finger joint) — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/box-joint/  (sheet CC BY 4.0; files Xem Studio Design License, https://xemstudio.com/license/)
Basis: Xem Studio design — geometry computed in the generator from traditional proportions
Catalog version: 2026-10-20

Overall (mm): length 90.0, width 60.0, height 90.0
- Woodworking joint drawn for 3D printing: the parts lock together by shape, so a print can be joined without glue or screws. Drawn at true size with the parts line to line (zero gap) in their assembled position — add your printer's fit allowance to the mating faces (your AI or slicer can do this).
- Square interlocking fingers, each as wide as the board is thick. Simple, strong, prints cleanly flat.

dimension  value
stock  10 mm boards, 60 mm wide
parts  board a, board b
fingers  10 mm wide, 10 mm long (one board thickness), 6 in all
assembles  one board drops onto the other
holds  racking, with a large glue area; pin it or glue it against pulling apart

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Xem Studio: Joinery design (geometry computed in the generator from traditional proportions) — web — Xem Studio design — https://xemstudio.com/

Free files (Xem Studio Design License, Xem Studio; STEP + STL, 3 parts): https://xemstudio.com/files/hardware/box-joint/index.json
API: https://xemstudio.com/api/geometry?object=box-joint