ive never done anything to paint. I screwed up my own taillight once. My rotary got a little dry and hopped, skipped right across my taillight leaving some gnarly marks. I was able to correct them mostly, but thank god it was my car.
Also one time doing my gf's car (THANK GOD AGAIN!) during a headlight restoration the disc that holds the pad. the little plastic piece with adhesive on the back literally just broke apart while i was using it. It left some lines in the head light which i was able to remove. what i wasnt able to remove was the broken plastic pieces that put a gash in my hand and later 4 stitches.
how many of you guys have insurance? I know I do. that was if i screw something up I am covered. In order to get this insurance you actually have to have a tax paying business but thats something you should have if you are doing this full time.
Thats one thing i do want to add. A lot of people are always worried about the car, but we are working with power tools that are spinning things upwards of 6,000rpm. This can be VERY dangerous if on of those pads were to fail and come apart. imagine your DA pad just coming apart and now being a 6,000rpm frisbee of death whirling around the garage. Its scary but ive seen things like that happen. When working in a body shop, i saw a 6" stick-it sanding paper just for some reason come off the DA and fly across the garage like a frisbee. it hit a guy in the arm and he needed 3 stitches.