Spool ends for dog poop bag roll cores

thingiverse

Those plastic cores at the center of every roll of dog poop bags have to be useful for something, right? And you can never have enough spools for wire, thread, monofilament, etc. Here's the answer. Print a pair of these ends, pop them on to each end of one of the cores and *voila* one simple, small spool. Depending on what you need to spool, you might want to cut the cores in half and have a smaller spool. You have to make it a pretty clean cut as these are friction-fit and there isn't a lot of room for variation.