is a 600 scratch to fine to apply unreduced epoxy over 2k?

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SK13

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I'm kicking myself on this one already but, I have a customers car that is in 2k primer with some sand throughs and different color primers that were used, the car is blocked out in what feels to me as a 600 grit scratch, I am looking to block it all out with guide coat prior to shooting 2 coats of white epoxy primer. I want to have all in white epoxy before thewhite sealer because its going to get the sublime green mopar color and I'm guessing this isn't a quick coverage basecoat (Wanda HS base). Question is ,is 600 to fine of a scratch to shoot epoxy over 2k primer?
 
180/220 is best as texas said. i wouldnt go crazy with it though. just take a da with a soft interface pad on it and buzz over the car real quick then red scotchbrite the areas you cant get with the sander and your ready to go.
 
I’m in the same situation. Car is in 2k with some sand through to metal, small coin sized spots. Also a few new panels still in EDP Want to put a good coat of black epoxy down to get it uniform and look like a satin finish and probably drive it a bit. Will eventually apply high build and paint. But in the meantime do you think hitting it all with 320 and applying a couple coats of epoxy will yield a presentable flat/satin finish for now? Or do you think 180 will be better for adhesion and still look smooth after the epoxy? essentially want it to look like new edp panels look.
Again, just want it to look presentable until I can actually get a good paint job done.
 
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The issue with cars sitting in 2k build primer is contamination. How long has it been in 2k? Was it exposed to the elements or in the garage the whole time?

320 grit will be fine for the epoxy primer's adhesion but will it remove the contaminated 2k? You also need to ensure your EDP panels are the real deal or cheap stuff that is just painted black.
 
'68 Coronet R/T said:
The issue with cars sitting in 2k build primer is contamination. How long has it been in 2k? Was it exposed to the elements or in the garage the whole time?

320 grit will be fine for the epoxy primer's adhesion but will it remove the contaminated 2k? You also need to ensure your EDP panels are the real deal or cheap stuff that is just painted black.
Click to expand...
its been sitting for probably 6 years, I ended up washing , wax n greese remover with a red scotchbrite pad then blocking with 180 there was more work needed than met the eye, Then 2 coats of unreduced epoxy some minor body work then 2 more coats of unreduced epoxy, Im now taking 320 to remove some peel and then 600 wet. Im working for charity on this one, but a good learning experience. I normally do bikes only and I gotta give it to you guys that do cars all the time, this is alot of metal, oh well keep on sanding
 
'68 Coronet R/T said:
The issue with cars sitting in 2k build primer is contamination. How long has it been in 2k? Was it exposed to the elements or in the garage the whole time?

320 grit will be fine for the epoxy primer's adhesion but will it remove the contaminated 2k? You also need to ensure your EDP panels are the real deal or cheap stuff that is just painted black.
Click to expand...
It has been in 2k for a long time, never exposed to elements, always in climate controlled garage
 
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