About this 3D model
Have a bunch of plastic blades or (ugh) razor blades? Here's storage for them! Built first for the plastic blades, but decided to put slightly wider/deeper holes on the opposite side to hold standard metal razor blades (at least standard in the US). Really the blades will fit in either slot, but the metal ones are a bit wider at the top, and are taller. Have not needed supports. Model is available on OnShape if you want to modify.