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Old 01-28-2007, 09:58 PM
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I have a valve cover I am doing. It has a coating on it. I wire brushed it and blasted it. It looked good so i polished the letters and fins. I cleaned the whole thing with brake clean. Outgassed. Then sprayed the super chrome base. let cook 395 at 15min. after pulling it out i saw a few missed spots of the prior coating. other than that it looked good. so i figured i wanted to see the final product and sprayed the lollypop blue on. When i pulled it out there were fish eyes and little sections that did not take the powder or it pulled away. It looks like dung.

I would like to know a full prep shcedule you use from taking the part in to fished delievery. I need to know what to use to clean the part and then clean off any polishing residue. then clean the part befroe the coatings go on.
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Old 01-28-2007, 11:06 PM
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Default Re: problems

Did you shoot the lolly Hot? I have had that a couple of times, but usually it's from oils still left in the substrate. Maybe oil/water in your airline?
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Old 01-29-2007, 01:45 PM
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Default Re: problems

I shot the blue cold because of the polished letters and fins. I wiped the powder off with a damp spong. Usually i shot the candies hot at about 150-180.
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