Barry, Ive read in some of your past posts that paint companies are NOW wanting 80 grit for epoxy and 2K urethane primers.
What companies are doing this switch??
In the past the grit range has been around 150 to 240.
Ive been a big PPG fan for many years but now work at a shop using Dupont products. I do metal work but have to prime the work myself then send off to paint. We use 4609 or 4906, I believe.
I finish off the filler with 180 and feather edge the surrounding paint with 320