Sine wave - slew bearing
thingiverse
Originally making this sine wave https://www.thingiverse.com/thing:20177, but I had trouble with the ball bearing using BBs, so I made a 3 part slew bearing one inspired from other design from this site. The 2 inner parts bolt together, sandwiching the balls. The whole things rotates ok (but not nearly as good as real ball bearing). The whole assembly can't be separated once assembled. It seems to glide well enough, but it could use some further work. more clearance on BB track, for smoother BB movement use 6mm BBs. print outer parts in 2 halves (less overhang defects)
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