The heavy orange peel comes from the subsurface coating on new vehicles. It's almost like a fiber type materiel and very thick, not like a primer or e coat. I noticed it years ago working in body shops. You can't spray smooth paint and clear if the substrate is course.
So why do they use those coatings? Sounds quite different than a heavy-build primer, which you block the heck out of to get it level. Can't you block the fiber material? Or does the color coat go right over the fiber coat after it is sprayed?
