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Old 02-14-2007, 06:42 PM
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Zinc body filler to patch rust??

I just read an article about a new process that involves spraying a special Zinc Filler on rusted body parts (the article guinea pig was a 65 El Camino rear lower window channel).
They first sandblast the affected area until good metal is found. Then they spray this Zinc stuff into the area until filled. Filing and sanding and reapplying until all low spots are filled and ready for paint.
Has anybody out there used or know anybody who has done this?
I have my 70 Chevelle and the lower window channel is rusted. This seems like a cheaper and faster fix than replacing the panel. Anybody?

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Old 02-14-2007, 06:47 PM
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Isn't galvanized metal zinc coated?....And it's tough getting paint to stick to it.
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Old 02-14-2007, 07:18 PM
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I'll have to re-read the article (again) but it IS a type of zinc. I thought the same thing. Zinc is hard to get anything to stick to. I attempted to weld some corrugated sheets together at my old job and besides wearing breathing protection, the stuff is hard to weld to mild steel too.
It's sprayed much like a spray on bedliner with a special type of gun and seems to be worked over like lead. Weird stuff.
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Old 02-16-2007, 02:02 AM
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Is it Rustbusters?

www.rustbusters.com

video at http://www.rustbustersllc.com/rustbustwebmovie.asf
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Old 02-16-2007, 05:54 PM
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Quote:
Originally Posted by jimfulco
Looked the same to me, but how do you paint galvanized metal?
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Old 02-16-2007, 08:41 PM
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Quote:
Originally Posted by 37year old kid
Looked the same to me, but how do you paint galvanized metal?
It has a oil film to it. They make a etching cleaner you use before painting.
I welded a ton of that galvanized stuff safety equipment heck we had fans and the old welder fix drink milk.

Craig
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Old 02-17-2007, 03:35 PM
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Quote:
Originally Posted by 37year old kid
Looked the same to me, but how do you paint galvanized metal?
You have to wipe it down with a mild acid to etch the zinc coating so the paint will stick. Be sure to rinse the acid off with clean water and let it dry completely.
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