you dont clearcoat or wax the box? just buff? how does it hold up to banging into it? wouldnt it would be easy to chip up like that?
Before priming, I wetsanded at like 500, 1000, then 2000.
why? you use a liberal coat of primer to fill in holes so over 400 grit before priming is a waste of energy you wont see it because the primer kills all your hard work. let the primer do its job as a filler.Before priming, I wetsanded at like 500, 1000, then 2000.
on the bondo? I think you might of missed we were talking about pre priming. primer will kill any sanding finer than 400 grit just from the thickness of the primer.Look at an autobody website, it is the same as painting a corvette (fglass car)
And to respond the 2000 grit sandpaper, it may be overkill but you almost surely should use 1500 if you want things to be shiny like the rest of your car. As a last note, if you can feel a scratch in the surface with your fingers you will be able to see it from 10' away. Car paint is picky.