this is a solid design, with a couple small issues. the hole on one side of the spool (the side that prints facing the print bed) had some drooping filament that kept the peg from fitting well, but clipping a couple millimeters off the peg on that side made it fit well. also, something about the positioning of the lip in front of the tape cutter keeps the tape from sticking after a cut. otherwise, the measurements are very solid - the positioning for the blade is perfect, and the spool fits just right inside a roll of tape. very well done!

Printed perf! Required a little force to fit inside the tape.