This is an small easy to print folding utility knife that will fit a utility blade. It is designed so it can be printed flat with no supports requiring the blade assembly parts to be glued together after printing and m2 12mm screws and nuts x 2.

The tightness of the screws keep the blade from falling out but still make it easy enough to open with one hand once worked in a little. You may have to play with how tight the front screw to get the perfect feel for you.