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Old 08-01-2005, 09:20 PM
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filling for powder coating

Is there anything that can be used to fill rust pits prior to powder coating. I have used JB weld in the past but it is non-conductive.
Thanks, Jan

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Old 08-02-2005, 07:20 PM
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Brazing rod or lead????
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Old 08-02-2005, 10:01 PM
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If you preheat your parts to around 250 F- 350 F (depending on how fast they cool down) prior to spraying the powder, you can probably get enough powder on despite the non-conductive nature of your filler. In other words, spraying the powder on a part warm enough to melt it when it hits the part lessens the requirement for conductivity in the substrate. Having said that, you should definitely test your proposed process on some scrap test panels prior to actually doing your parts, and check for intercoat adhesion as well as acceptable film build and appearance. Good luck!
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Old 08-02-2005, 10:34 PM
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There is a 1K product that comes in a calking gun type tube that can be applied and sanded to fill voids prior to powdercoating. It is conductive. I don't know the brand but can probably get it for you in a few days. Or call information and ask for the number for Peninsula Powdercoating located in Baraga Michigan, when you get connected ask for Brian, explain your situation and describe the product, I'm sure he'll give you the brand and part number you need. PM me if you have problems or need me to get the info. Bob
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Old 08-03-2005, 02:25 AM
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Quote:
Originally Posted by baddbob
There is a 1K product that comes in a calking gun type tube that can be applied and sanded to fill voids prior to powdercoating. It is conductive. I don't know the brand but can probably get it for you in a few days. Or call information and ask for the number for Peninsula Powdercoating located in Baraga Michigan, when you get connected ask for Brian, explain your situation and describe the product, I'm sure he'll give you the brand and part number you need. PM me if you have problems or need me to get the info. Bob
This would be some good info. Dan
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Old 08-03-2005, 10:50 AM
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Would a product like all-metal work? The fillers with aluminum in them. Don't know, I've never had anything powdercoated.
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Old 09-02-2005, 10:41 AM
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Thanks everyone for your help. I will let you know how this works out.
Jan
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Old 09-02-2005, 10:48 AM
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I think United States Chenmical's All-metal is supposed to work under powder coating, but I have never done it.
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Old 09-02-2005, 02:50 PM
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Primer before powder coating?

High temperature Lab Metal
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Old 11-29-2005, 08:46 PM
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nissan

Quote:
Originally Posted by antiquecar
Is there anything that can be used to fill rust pits prior to powder coating. I have used JB weld in the past but it is non-conductive.
Thanks, Jan
eastwood sales a metal fill but keep it thin, we used it on desks an it worked. having a real good earth ground is important.
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