I needed a simple bracket so I could attach a wooden board surface to a frame I made out of aluminium extrusion.

This bracket is designed to offset the board by 20mm from the frame. In my case this was to allow for a 2040 outer frame with 2020 internal struts.

There are two variants, one if you're using M3 inserts and one if you're using M4 inserts.

It should be printed on it's side like the STL is oriented, so that the layer-line weaknesses don't cause the “jaws” to snap off when installing the brackets.