when to pull the plug??

Oil-less? Do you wear ear plugs or ear muffs while it is running? Or do you have it sitting in a sound proofed room....those things are pretty noisy...

they are noisy ......and ear plugs are a must as well as safety glasses and now I even wear a full respirator when sanding with a D.A. sander......too many mornings of blowing my nose and all that dust and crud coming out (sorry to be graphic) but health should be number one.

When I was a bit younger and starting out I did some daring stuff and didn't take care of myself but after I broke my finger in the shop for being stupid with a drill, I really take care of safety now.