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2manycars · 10-25-2015, 08:34 AM

I ran a restoration shop for 25 years, and used PPG products exclusively. DP primer, K36 surfacer, and Concept top coat. Not a good idea to mix products, and never a good idea to put urethane over lacquer. It is like building a house on a swamp. you want a stable base if you want a stable result in the top coat.
Good paint is very expensive today, and that is a burden, but using cheap stuff usually produces poor results.

10-25-2015, 08:34 AM	#8
2manycars Senior Member Join Date: May 2010 Location: Eastern CT Posts: 2,732	Re: Primer Surfacer for PPG Concept paint I ran a restoration shop for 25 years, and used PPG products exclusively. DP primer, K36 surfacer, and Concept top coat. Not a good idea to mix products, and never a good idea to put urethane over lacquer. It is like building a house on a swamp. you want a stable base if you want a stable result in the top coat. Good paint is very expensive today, and that is a burden, but using cheap stuff usually produces poor results.