I don't do any car body work any more, don't have the space really and it can be very time consuming if things are worse than expected
I use to gas weld at work, feeding a filler rod into a molten pool, it's a skill that needs practicing or you loose it, but very satisfying
Have put a few written off cars back in the road, but places like car transplants now sell their written off cars, plus
CFMOTO UForce windshield parts for more than you can just drive one away so now pointless, unless you own a body shop and go one stage further and get cars that need jigging it's in my opinion now a pointless exercise.