Interesting, I thought that automotive paint was meant to be sanded in stages ending in super high/fine grit?? For base coats are you just supposed to lay on a ton of coats then sand down to super fine before spraying clear? At what point are you supposed to smooth out those deep 400 grit scratches?
With real automotive paint, you don't sand between the base coat and clear coat. The p-sheets for the base and clear will tell you how long you can wait between applying the base and applying the clear.
Proper paint will lay right on top of that 400 grit surface and not display any scratches through the top coat.
