Media Blasting Body - Worht the money?

[salazar44]

Originally Posted by Captainfab

Glad you mentioned that Derric....I almost forgot about the PPG NCP primers that I believe is a etching epoxy primer....I've used this one also. IIRC the NCP primers don't have the isocyanides (sp?) Although it is my understanding that if the metal is media blasted use of an etching primer isn't as crucial since the media blasting etches the metal. Any opinions on that?

I dont think so. I believe a chemical etch of metal is required, not a mechanical etch. This would be like saying sanding is etching the metal, so no protection is required.