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You answered my last question, thank you.  Now I got a few more and have looked to see if I could find on the answers, maybe I am missing it.
Do I need use a primer/sealer before applying basecoat/clearcoat?  I am having problems with the paint raising up.  I used 320 grit first, primed with rts primer, sanded with 400 grit, then applied basecoat.  Look great, waited around 5 minutes and the paint wrinkled.  What am I doing wrong?  I don't want to bother you.

Answer
in 20+ years of painting, I've never seen an RTS primer, except for old style laquer sealers Something is wrong. You need a 2 part urethane primer surfacer, otherwise, the primer is a thermal flow primer, like Laquer primer. Even laquer primer needs a second component, thinner. I don't know what you are spraying, but is sounds like total crap. Get some 2 part urethane primer surfacer. It needs sprayed on, allowed to dry 3 hours minimum, then sanded with 600 before painting. Bill  

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William Forster

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22 year veteran, 2 years of vocational training. A.S.E. certified Master collision repair/refinish technician. I-CAR certified. 17 yrs. GM experience. I can answer most questions related to automotive body repairs, ranging from small scratch repairs all the way up to the most extensive collision repairs. I can expertly advise people on what to expect from their body shop experience, right down to what self repairs should, and should not, be done. Lastly, I can advise tricks and tips for classic car restoration, such as lead repairs. SORRY, I DO NOT DO ONLINE ESTIMATES OR GIVE PARTS PRICES!! BE PREPARED FOR THE CORRECT ANSWER- NOT THE ONE YOU WANT TO HEAR. I won't B.S. you, or sugar coat answers. Just plain, hard facts.

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