I designed these spools to be printed with 0,4mm nozzle. The video shows which parts to print for a particular spool (there are 3 different spools). The two parts of the spool need to be glued together (I made it this way to reduce the spool's size by not having a locking mechaznizm). I tried to optimize this design for material usage.

I printed my spools with 0.28mm layer height with PLA.