Pokeball spinner for small hands (624Z bearing)
thingiverse
My son wanted to have the Pokeball spinner (https://www.thingiverse.com/thing:2278247), but he's only 6 and a 608Z bearing-based spinner is too large for his hands. I tried scaling the Pokeball spinner down for a 624Z bearing but it's not a linear scale so it wasn't going to look right. I therefore redrew the design in FreeCAD using a scaled copy of the Pokeball spinner as a guide. Be aware that this is *very* small. The centre buttons on the balls are less than 4mm across, so you need to have your printer set up well. I strongly recommend a 0.1mm layer height if you can do this and an absolute maximum nozzle diameter of 0.4mm. A diameter of 0.2mm would be much better. Also, since this is a spinner it needs weight and strength, so go for a 100% infill. If you want, you can add three M5 nuts to give it a bit more weight so that it spins better... The spinner I made was printed in ABS, you may have better results with PLA (but I've only ever printed in ABS).
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