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The powder coating shop now tells me the discoloration is a result of the sandblasting. Something about the porous surface being heated to 400 degrees to cook the powder. They say it will not happen on a smoother surface, like bead blasted or sanded. The guy said he can chemically strip them and re-coat them, but it would be fruitless as the base metal is discolored.
The good news is that they agreed to re-coat them in the color of my choice. He tells me they can re-heat them and "hot spray" over the existing clear, and it will bond to that just as it would to a freshly sand-blasted surface. So now I'm looking at various satin and flat blacks; he has a range from dead flat to gloss. I'll be dropping off the wheels and checking samples this afternoon.
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Jeff
'72 911T 3.0 MFI
'93 Ducati 900 Super Sport
"God invented whiskey so the Irish wouldn't rule the world"
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