Re: Looking for painting advice

Posted by CNKS on May 06, 2007 at 19:53:11 from (204.249.178.32):

In Reply to: Re: Looking for painting advice posted by turbos10 on May 06, 2007 at 18:45:31:

PPG Omni MP 170 has a 3 day window (at 70 degrees) before it needs to be scuffed. Then you have to reapply before you topcoat it. That means that during the 3 day period you get a chemical bond to whatever you put over it, which is better than the mechanical bond you get with sanding. Known as "wet on wet". The epoxy is waterproof and most minor chips will only go down to the epoxy, not the bare metal. As long as you didn't expose bare metal when you scuffed it you are ok -- but it is not necessary. I have seen some pretty rough sheet metal that would take multiple coats of surfacer to cover, in that case, although body filler is hard to sand, it is less work.

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