Scuff and sand single stage to prepare for BC/CC

[off2wildblue]

I would like to scuff and sand my existing single stage and then put on BC/CC.

I just have a couple questions:

1. Any Gotchas to watch out for?
2. Can I just put my High Build on top of a single stage that is sanded to, say 320 or 400 (wet) or should I first put a coat of epoxy then high build? The latter seems correct.


Also, any advice on sand paper grit for this would be welcomed. Parts of the car don't seem to need high build but I figure better safe than sorry. I could be wrong though. I figure 400 wet, then epoxy, high build within window, then 180, 320, 400 wet and end with 600 wet for a metallic/pearl color.

I really appreciate the help. You guys helped me out a bunch on my last car but it was a complete metal up job. So I am still learning the scuff and paint stuff.

SAM

[Len]

I would like to scuff and sand my existing single stage and then put on BC/CC.

I just have a couple questions:

1. Any Gotchas to watch out for?
2. Can I just put my High Build on top of a single stage that is sanded to, say 320 or 400 (wet) or should I first put a coat of epoxy then high build? The latter seems correct.


Also, any advice on sand paper grit for this would be welcomed. Parts of the car don't seem to need high build but I figure better safe than sorry. I could be wrong though. I figure 400 wet, then epoxy, high build within window, then 180, 320, 400 wet and end with 600 wet for a metallic/pearl color.

I really appreciate the help. You guys helped me out a bunch on my last car but it was a complete metal up job. So I am still learning the scuff and paint stuff.

SAM

Hi Sam
I'm not sure why you're applying primer because it's not really needed on top of a "good" existing paint job unless you have some surface irregularities you're trying to level. You should be able to sand the existing urethane with some 400/600 sandpaper then apply your base color.

The main variable here is the quality of the existing paint. If it's indeed a good quality urethane you should have no problems applying your base on it but if it's a cheap imitation of urethane then you base could cause it to lift and/or wrinkle.

[off2wildblue]

The car does have descent paint. It isn't bubbling or anything even close. I just don't know how flat the panels really are. So I figured I would spray on the high fill primer and then double check the panels this way. Also, it is red with big black stripes. So I thought I would need a sealer coat anyway because I plan on painting it a metallic/pearl yellow.

So given this scenario what do your recommend?

SAM