Home repair parts to 3D print

7 parametric home repair parts. Open any one, change the dimensions in plain English, and download a watertight STL.

3D printable wall hook

Screw-mounted J-hook with a countersunk backplate — the part that always breaks first.

Replacement foot with a dowel socket — the fix for the chair that wobbles.

Gusseted L-bracket with countersunk holes, sized for a small floating shelf.

Grooved wedge with a finger hole so it comes back out of the doorway.

Replacement child-safety tensioner for a roller blind chain.

5mm square-socket bleed key with a handle you can actually grip.

Blanking plate for the socket box nobody uses any more.