I was working on my buffer and the UPS kid came in unexpectedly and grabbed my arm to tell me I had a delivery. The blade caught in the wheel and in less than a flash, had hooked me good. Had it not been the fact he was actually a good kid, I'd have popped him in the snot locker for doing that. If there's one tool in your shop that hates you the most...it's a power buffer....remember that.