Dig this out today. Hasn’t been fired up in a very long time. I think it’s from the late 60’s. The collet looks intact and it does run, but the motor is VERY loud. I don’t know much about old power tools. Should I try a little maintenance on it and see if it’s useable or just bite the bullet and buy a new one that’s probably easier to use and most likely safer? It is cool, though.