Tusk tenon joint (knock-down wedged tenon) — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/tusk-tenon-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 80.0, width 115.0, height 44.0
- 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).
- A knock-down joint: the tenon passes through and a tapered wedge through the projecting end draws it tight against the post. The slot reaches 1 mm into the mortise so the wedge bears on the post, not on the slot.

dimension  value
stock  20 × 20 mm square
parts  post, rail, wedge
tenon  8 × 14 mm, projecting 35 mm past the post
wedge  5 mm thick, 1:10 taper, 44 mm long
assembles  tenon through, wedge driven down; knock the wedge out to take it apart
holds  pull-out, tightened by the wedge against the post's face

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, 4 parts): https://xemstudio.com/files/hardware/tusk-tenon-joint/index.json
API: https://xemstudio.com/api/geometry?object=tusk-tenon-joint