Depends on how rough the paint was before you primed. If your looking to get it strait as possible, and have the time/ money, use a long block with something kind of course, like 120/180. block all the flat panels until you start to burn through on the high spots. If it is taking it all off, and not leaving anything untouched, give it a quick scuff with 220, reprime, and now you have strait car, and all your trying to do is remove the orange peel from the primer. Use a block with something around 220, and work up your grits after that. What you end up with depends on what you are going to sray the car with. Base clear, with a high metallic, I would consider going to 600. Single stage, solid color, you can stop at 400. Maybe 320.tubais said:What grit paper should i use on the filler primer to get it ready for the top coat 220grit maybe?
On the contrary. I may do my 68 vert myself.tubais said:thx for the info I want a metallic finish with a clear. So i will plan on stopping on at 600 grit. I put 2 very heavy coats of urathane primer on top of the full coat of epoxy primer. So seems my weekend is comming to a close I'm gonna see if i can't get the primer knocked down. I have alot of flexable boards for sanding.
I hope this topic isn't boring anyone.