From the Loftsmith community

Printable C-clamp

Holds two pieces together while the glue sets, or keeps a board still on the bench. A round knob on top turns a screw down onto a small pad, so you can tighten it by hand. Change how wide it opens and how deep it reaches to suit your work.

3 parts · 42 g · 73 × 39 × 155 mm