I have coated 2 valve covers with super chrome powder now and both have had the same problem. They both had a lot of small spots or bumps on certain parts of them, not all over but in some spots.
The first valve cover was blasted, then cleaned, then brake cleaned and then coated. I did not preheat the first valve cover to expel oil in the aluminum. I thought that was the problem.
The second one I did today, preheated it for almost an hour at 500 and it still had the same problem. I was told to heat it to a higher temp than the cure temp, that way anything that would come out at 400 would be gone.
I also have an issue with what looks like small hairs in the super chrome, possibly dust in the air? I also added a lollypop blue candy coat and had a couple areas where it did not flow evenly. Is it possible to scuff the surface and add a second coat to fill in the missed spots? I coated this piece within 5 minutes of the chrome curing. Was that too fast? Should I let it cool to 150?
Any help would be awesome!
Jason
The first valve cover was blasted, then cleaned, then brake cleaned and then coated. I did not preheat the first valve cover to expel oil in the aluminum. I thought that was the problem.
The second one I did today, preheated it for almost an hour at 500 and it still had the same problem. I was told to heat it to a higher temp than the cure temp, that way anything that would come out at 400 would be gone.
I also have an issue with what looks like small hairs in the super chrome, possibly dust in the air? I also added a lollypop blue candy coat and had a couple areas where it did not flow evenly. Is it possible to scuff the surface and add a second coat to fill in the missed spots? I coated this piece within 5 minutes of the chrome curing. Was that too fast? Should I let it cool to 150?
Any help would be awesome!
Jason
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