3D Solutech 75mm Masterspool

thingiverse

I like the 3D Solutech filament refills, but I have some complaints about their recommended spool model. First of all, the recommended model is designed to accommodate a reel with 3 cable ties around it. The refills now come with 4 cable ties and are annoying to load onto the original spool. Second, the spool doesn't screw in enough which causes the filament to ride in the gap between the spool and the rest of the reel. I didn't think this would be an issue at first, but it did actually snag while feeding. This three part design uses a spacer that prevents the spool from rubbing against the cable ties while it is being screwed together. The entire assembly can be tightened down fully before the ties are cut. In addition, the print time and material cost for this spool are substantially less than the original. 1.5" inner diameter