Re: Sheet metal pitting!

Posted by CNKS on March 25, 2007 at 16:26:51 from (204.249.178.32):

In Reply to: Sheet metal pitting! posted by Andrew Z on March 25, 2007 at 12:53:53:

After cleaning, use bondo or a similar product. Do not sand too hard or you will dig it out of the pits. Follow with a non-sanding epoxy primer, which will give the following sandable surfacer or surfacer a good bite. Sand it smooth (400 grit) and topcoat. If not smooth, reapply the surfacer. Two suggestions are PPG Omni MP 170 for the epoxy, followed by PPG Omni MP 181 primer surfacer or MP 182 surfacer. The 182 is two part, the hardener contains isocyanates, requiring supplied air for breathing. The 181 does not use hardener. The 170 is two part but the hardener does not contain isocyanates. 170 has a 3 day window to coat with something else, otherwise it has to be scuffed and reapplied.

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