Spool drawer stopper

Simple drawer stopper. Stops your 3D printed spool drawers from opening themselves if they don't friction fit quite as they should.

Just drill a hole near the center of the spool and measure its width; then take the width and insert it into the .scad file I provided (in my specific case, I had to reduce it by 0.1 so that it wouldn't be too difficult to remove but still stayed put, YMMV).