Adjustable Spool Holder 42 - to 75mm hole with skate bearings

thingiverse

Updated - changed threads to 4x width in v2 and rounded sharp edges. This should make it much easier to lock in place and handle. It's now much simpler to screw together, and less scratchy when assembling. Universal Printer Spool Holder. The size of the center hole is up to ~79mm. I have a spool with a 75mm hole width, so none of the other designs on Thingiverse fit. This holder uses 2x standard 608 skate bearings. I prefer open unsealed steel bearings because they spin well and are affordable. The two pieces screw together easily and create a tight balanced center. I used PLA 0.4 tip with 0.15 layers, but you can go much bigger. 20% infill is recommended. The bearing fits snugly in the holder. A little heat from a hair dryer or heat gun might help it fit easier, but it seemed to fit fine for me. I used 608 skateboard bearings in the spool center because they improve print quality. Before I made this design, I noticed deformities on the side opposite where I set up the spool due to insufficient extruder motor power. I designed the holder in Fusion360 from scratch, using a few other sources as inspiration. If you make this design, post a picture! If you have any issues with the design, let me know. I have 5 of these holders, and they all work fine for my spools, but I want it to be universal. Update BOLT 2.1: one broke, so I thickened the bolt around the area where it failed.