Sanding Epoxy Primer

[newbie]

Sanding Epoxy Primer

I need a little help.......ok maybe a lot. I'm preparing to paint a brand new Honda. Based on what I've read here, I'm going to sand down and apply an epoxy primer. I have flame decals under the clear that of course I need to get rid of. My question is, if I'm going to shoot an epoxy primer can I get away with a fairly rough sand paper? What grit do I need to use just prior to shooting the epoxy? Then after my epoxy has cured, would a 600 be acceptable to use on the epoxy prior to my base coat?
Thank you for any advice

 

[newbie]

Re: Sanding Epoxy Primer

Follow-up question, based on a recent post by Scott F in reference to factory paint "No need to prime the complete fenders.
Once all prepped and in the booth, spray a coat of sealer over the parts.

Since I'm shooting over brand new factory paint also, will this be better, or just easier.

Thank you,
newbie

 

[rex]

Re: Sanding Epoxy Primer

If I blast it I'll epoxy it.You really don't need etch primer since the sand etches it but make sure you wipe it down good and get all the lint off first.If I have bodywork to do I let it set overnight and then do the bodywork and prime and block the bodywork,then reprime doing the whole piece.Most of the time I dry sand it with 400 on a DA and hand.If there is no bodywork I let the epoxy (DP) set for a few days in the heat and sun to get it shrinking up.Then I'll wetsand it with 600 trying not to break through.Either way I seal it,let it flash off and start painting.

 

[rex]

Re: Sanding Epoxy Primer

It depends on whose epoxy you're using.Don't rely on PPGs DP for filling heavy sand scratches.If you aren't stripping the paint off I think I would get rid of the decals and feather out into the factory paint,them prime and level it out with primer surfacer.Sand the whole thing and paint it.If you're doing a whole new base color and grafix I'd start from metal to keep the thickness down.

 

[newbie]

Re: Sanding Epoxy Primer

Thanks Rex,
If I do blast it down to bare metal, what is your recommendation to prepare it for a urethane bc/cc.
Thanks