Simple CNC router hold down clamp

A simple hold down clamp for CNC routers for common material thicknesses. This version screws directly into a 3/4" CNC router spoilboard with 1-1/4" pocket hole screws. Versions for 1/4", 1/2", 3/4", and 1" material provided. This clamp works great on my CNC router and the small studs on the clamping surface seem to really increase the grip.

I recommend printing with the left or right side down to increase the strength in the direction of the clamping force.