lacquer air dries and is reversible meaning that even after its sprayed and dries you can wipe it right off with a rag and some thinner, 2 part primer has a hardener and dries from a chemical reaction much like body filler and is not reversible. epoxy primer is just used to get adhesion to metal and has no sanding properties, thats where high build primer comes in. high build primer does exactly what it sounds like it would do, it goes on heavier and leaves more film build so it can be sanded smooth for painting. dtm primer is great because its basically an epoxy and high build primer all in one which eliminates the need to buy 2 products.
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