painting question

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   Im starting to prep Cams truck for paint. I started on the hood and discovered it had been painted once before. I wound up using 80 on a DA to get through the 5 layers of dead, cracked paint C coat and primer. I kept with the 80 and have got the whole truck down to original primer with scattered areas of bare metal. 
What grit should I sand to before spraying primer? My thoughts are 120 then 220 then prime. Would that be correct?
I have one dent in a fender flare and some newly discovered old filler that I will leave for the paint shop as I don't have nor do I want to learn those skills. 

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baitkiller Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Platinum Member Joined: October-11-2011 Location: SW Florida Status: Offline Points: 1693	Post Options Post Reply Quote baitkiller Report Post Thanks(0) Quote Reply Topic: painting question Posted: September-04-2017 at 10:26am
	Im starting to prep Cams truck for paint. I started on the hood and discovered it had been painted once before. I wound up using 80 on a DA to get through the 5 layers of dead, cracked paint C coat and primer. I kept with the 80 and have got the whole truck down to original primer with scattered areas of bare metal. What grit should I sand to before spraying primer? My thoughts are 120 then 220 then prime. Would that be correct? I have one dent in a fender flare and some newly discovered old filler that I will leave for the paint shop as I don't have nor do I want to learn those skills.
	Jesus was a bare-footer.............

gt40KS Members Profile Send Private Message Find Members Posts Add to Buddy List Gold Member Joined: August-05-2017 Location: Wichita Kansas Status: Offline Points: 946	Post Options Post Reply Quote gt40KS Report Post Thanks(0) Quote Reply Posted: September-05-2017 at 7:56am
	Technically, the bare metal areas would need a metal etching primer for the primer to adhere properly. But the question about grit is a question about how pristine are you wanting the truck in the end. If this is merely a repaint of an average daily driver, 120 thoroughly over the entire truck followed by at least 2 coats of FILLER primer would suffice, allowing it to cure for at least a full 24 hours before sanding. If it is more of a show car job you are looking for, 22o is a minimum before primer. Then the etching primer followed by a minimum of 2 coats of good quality primer and a guide coat dust to finish. Then block sand starting with 320-400 to remove the high spots and recoat with primer and guide coat and so on till the guide coat comes off smooth over the entire vehicle. Wet sanding afterward with 400, 800, etc. is optional depending on just how perfect this needs to be.
	JCCI 1995 Ski Nautique GT40

painting question

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