I tried to make a ball bearing in one pass.
I didn't find it precise and obvious enough to do.
so I rotated in two passes, first the balls and then the inner and outer rings.
Everything is explained in the video.
There is good rolling and non-slip.
I made two principles, with 12 marbles and with 8 marbles.
two more little spinners.
Ancien chef d'entreprise, aujourd'hui à la retraite. Passionné d'impression 3D
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