A guy in Tulsa told me to use a heat gun on a dented bumper and I almost laughed at him
Had a 2016 Camry come in three weeks ago with a crease in the rear bumper cover, customer didn't want to pay for a new cover and the paint was already spiderwebbing anyway. I was about to break out the filler and sand it down like always when this older guy who does PDR work out of the bay next to mine walked over and said to hit it with a heat gun first. I told him that was a good way to melt a bumper and he just shrugged and said try it at 400 degrees, keep the gun moving, and push from behind while it's warm. Took me maybe 15 minutes and the crease popped out almost flat, way better than the 2 hours of filling and blocking I had planned. I hit it with some 320, primed it, and the customer picked it up the next day for $220. Now I keep the heat gun on the cart and I've done it on four more covers since. Has anyone else had decent luck with heat on urethane covers, or am I going to run into one that cracks on me eventually?
Heat works great on the soft covers like that Camry but watch the ones with a lot of age or sun damage, they get brittle and will crack on you. Keep the gun moving and don't get closer than a few inches and you'll be fine. I've been doing it for years and only lost one, and that one was already cracked before I started.