3d printed threads and snap connectors are nice, but M3 bolts and nuts are more robust and look dope. They also make the model easier todesign print, since you don’t have to worry about tolerances as much.
STEP/STL and instructions available here: www.printables.com/model/548770-master-spool
Lol, i actually don’t know. I only know it exists. I haven’t actually printed anything in awhile but i like to see what other people are making and doing.