Originally Posted by 35WINDOW
I have filled 80 grit scratches with SPI Epoxy (not necessarily recommended), but then it does seem to have a higher solids content than most......
edit: I generally spray two heavy coats-oh, and I don't have anything on my Car except Epoxy-
With scratches that deep, I would seal it with epoxy, then shoot a high-build over that and sand it. It is so not worth it if you see sanding marks in your final product.