My can of Genuine Bondo says bare metal


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Posted by chris case on Wednesday, May 17, 2006 at 4:09PM :

In Reply to: Re: I hate to be the bearer of bad news... posted by Keith in Washington on Wednesday, May 17, 2006 at 1:33PM :

Use 80 grit, for 2 inchs around area.

I suspect there are some primers that would help adhesion, but 50 year old paint ain't it.

I know for a fact that 'hot rod' and lacquer based primers allow water to penetrate, encouraging rust underneath. Bondo is also somewhat hygroscopic, as well as porous. So I'm using an oil based primer OVER the bondo, since it may take me a year to get the whole thing ready for paint...one patch a day, that's all I ask...



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