mppickett posted:Todd M posted:@Michael Pickett - I was watching, "Iron Resurrection", and they were doing body work on a Vette. Shorty, their painter, explained that body work on fiberglass was difficult because sanding tends to make hills and valleys. I had never heard that before. What has your experience been?
When I was removing the rotten paint and damaged gelcoat I tried using various power sanders. The disc ones were particularly prone to making valleys and the flat oscillating ones were better in some places. Our cars have so many curves it is tough for a non-professional with limited intelligence (me) to get good results with power tools. My bro-in-law built sports fishing yachts for a few decades and swore by his air power file, but I decided that I'd just get a bunch of rubber sanding blocks and build up my biceps.
Admittedly, I watch a few car building tv programs, and at least during the filming it appears that they do most of the sanding without power tools. It seems they use different size sanding blocks with the longer ones bending.