[RimstarOrg] has brought us an oldie but goodie this week. He’s built a ball bearing motor, a design which has been causing engineers and scientists to squabble for decades. [RimstarOrg] used a ...

It turns out, ball bearings are all around us inside all our wheels ... Some of you may have already come up with the answer — we use smooth logs as roller pins under the rock. We chop down some trees ...

Bearings are designed to tolerate force in one direction, and it is not typically from the side. If you press on the rollers ...

[Cliff] of might have the answer for you, in the form of 3D printed bearings with filament rollers. With the exception ... other 3D printed bearing that use printed races, as well as a slew ...