I have an inexpensive 4x6 belt/6 inch disc sander that is many years old. The drive pulley is polymer and is fitted to the drive axle with a spline. The pulley teeth stripped out and rendered the machine useless. The pulley is out of production so I cleaned everything up with a wire brush and used JB Weld to reaffix the pulley. Works like new so far. At least until I can budget a better machine.
I always have an unopened JB Weld around.
I always have an unopened JB Weld around.