Heex

Heex started as joints that hold wooden boards at 120°, for shelves that grow as a honeycomb of hexagons: hence the name. The right-angle joints came later, for practicality, and reuse the same design for square grids.

Each joint clamps the ends of the boards between a printed base, or core, and printed jaws, tightened with M8 bolts and nuts. Board thickness, joint depth and hardware are parameters of the design.

The joints

• 120° joint: a base and a jaw, where two boards meet at a corner of a hexagon.
• Three-way joint: a core and three 120° jaws, where three boards meet.
• 90° corner: a base and a 90° jaw.
• 90° T: a base and two 90° jaws.
• 90° cross: a core and four 90° jaws.

Planner

Pieces, joints and boards to buy for a hexagonal shelf.

Also as a single HTML file that works offline (version 0.3.1).

Files

$ ls -lh files/
-rw-r--r--  112K  2026-11-04  heex-120-base.stl         # 120° joint, base
-rw-r--r--  158K  2026-11-04  heex-120-jaw.stl          # 120° jaw
-rw-r--r--  593K  2026-11-04  heex-120-triple-core.stl  # 120° three-way joint, core
-rw-r--r--  115K  2026-11-04  heex-90-base.stl          # 90° corner joint, base
-rw-r--r--  151K  2026-11-04  heex-90-jaw.stl           # 90° jaw
-rw-r--r--  307K  2026-11-04  heex-90-cross-core.stl    # 90° four-way joint, core
-rw-r--r--  166K  2026-11-04  heex-90-tee-base.stl      # 90° T joint, base
-rw-r--r--  1.8M  2026-11-04  Heex.sc                   # SolidCraft 0.40.0-rc.2
-rw-r--r--   23K  2026-11-04  heex-planner.html         # Shelf planner, works offline in a browser

Release v0.3.1. SHA-256 checksums in manifest.json.

Licence

The design and the parts are under CC BY-SA 4.0: share and adapt them, with credit, under the same licence. The planner is under the MIT licence.