pcb hold-down (100mm x 70mm)

I found myself needing to hold stationary a 100x70x1.5mm PCB so that I could mill it on my cnc. I routed a jig, but it wasn't precise enough. I decided to try a 3d print instead, and it came out wonderful.

I included a hole in the bottom that you can use to apply pressure to the bottom of the pcb to pop it out of the recess. This was a great idea, because once the board is in the recess, it would be hard to pry it back out.

This is written in a OpenSCAD and I've set it to be a customize