Tinkeriffic BB Bearing 58mm Spool Spindle

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Crikey! It's another Tinkeriffic bearing spool spindle. My Faire Play Kickstarter was funded to the tune of 120%, and now I'm printing backer rewards. I got myself a new roll of gold filament, but of course it doesn't fit any of the bearings I've made so far. Apparently Hera's mad at me for only making an Athena Makeover Kit. I'm cursed. A wiser man would take the time to create a Tinkeriffic bearing in Thingiverse's customizer and then adjust bearings parametrically as needed. But Lao Zheng ain't got no time to be learnin' no Customizer, foo! So I banged this out in Maya in like eight seconds. Enjoy. This spool spindle is designed to fit a 58 mm spool, just like the one I got from BuMat. This three-part solution (thirteen parts, if you count the 4.5mm BB's) uses a Tinkertoy rod as an axle and gives your filament spools a much smoother ride. I found inserting BB's into the original 608 bearing to be frustrating, so I split the bearing in two and left it up to the end user to super glue the parts together. The walls of the inner spool are quite thin by necessity; I recommend using multiple shells or high infill for that part.