R8 FilaBoat

thingiverse

I don't need to explain the function of this item, do I? After all, it's just another filament spool holder for people struggling with R8 bearings. Do you have a bunch of larger bearings and don't know what to do with them? That was my situation. I had 10 each R8 bearings measuring 1-1/8" OD, 1/2" ID, and 5/16" wide. If you have 6001 metric bearings (28x12x8), these work nicely if you scale the models (94.49%). At 1/2" diameter, I know most printers can print a functional thread. The pitch is 8TPI and clearances are built into the rolled thread pattern. This also accounts for corner rounding and blobs. I've scaled it down for 10mm diameter bearings and the thread is still quite functional. Care to try 8mm diameter for skateboard bearings? That's beyond my curiosity. Anyway, if you build one, show us. If you have problems with it, tell us.