Best posts made by roiki11

@mrehorstdmd

They prevent the loss of magnetism that happens in ferromagnets when temperature rises above their max working temperature point, until it reaches its curie temperature and completely demagnetizes.

Most motor magnets have the working temperature limit somewhere in the 80-160 range. Its never really stated properly and I wouldn't trust Chinese motors to use the proper materials.

@coseng

You might want to check the temp rating on the linear rails. Most of them are rated around 85c and the plastic parts are nylon which melts at around 120. It's possible the thermal expansion binds them beyond that.

You'll also want to use grease that works at high temperatures and doesn't melt away.