Spool Holder for 3/4 inch dowel

thingiverse

This is a spool holder I designed to go over a 3/4 inch dowel in a dry box. It should fit just about any 1 kilogram spool. The bearings are press fitted into the ends and use bb's for a bb gun. I printed all of the bearing parts at the lowest layer height my printer can manage, and the body and nut of the spool holder were printed at .2 mm layer height. The only portion that I used supports was for the main body, and I used touching build platform only. The threads did not need any clean up for me, but that may just be my printer. I used a brim on the bearing parts and a skirt on the rest. The cage for the bearings faces outward once press fitted. To load the bearing, place the inner and outer race on a flat surface with the inner race inside the outer. With the two races touching in one spot, add the bb's and fiddle with it until all of them fit. work the bb's around the bearing and press fit the cage over the bearings. They may need to be taken apart and filed to make them run smoother.