[Not2B]

We did alot of our rollers for the ball system last year out of threaded rod. We didn't want to, but we didn't have a lathe, and it was taking too much time threading the ends of solid shaft. So we went with threaded rod. It was a bad idea. Most issues you wouldn't see (we had nuts that tightened as time went on, binding the system), but we did cut into the bearings with the thread.

Good luck!