Wedged through tenon joint — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/wedged-through-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 80.0, height 20.0
- 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).
- The mortise is flared toward the far face; once the tenon is through, wedges driven beside it fill the flare and lock it like a dovetail.

dimension  value
stock  20 × 20 mm square
parts  stile, rail, wedge 1, wedge 2
tenon  15 × 6.67 mm, through
flare  2 mm per side at the exit face (slope 1:10)
wedges  two, 2 mm thick at the head, 20 mm long
assembles  tenon in, then the wedges driven in from the exit face
holds  pull-out: the wedged tenon becomes a dovetail inside the flared mortise

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