This mat cutter is a redesign of the Logan 1000 mat cutter, except it uses standard single edge razor blades instead of custom Logan blades. I Also made it a little larger and easier to grip. It cuts a 52 deg. beveled edge in standard mat board.
After printing, sand flat any ridges or lumps in the slot where the razor blade goes. Secure the clamp piece with two 6-32 screws.