Welcome! Some great news: We have recently upgraded our forum. In addition to the mobile website version, you can now download Android and Apple Apps for a truly premium experience. You owe it to yourself to click on the link above and download your app now. Also, we have improved our security. Some registrants were removed in this process, but rest assured, all posts were retained. Our apologies in advance if you find yourself needing to re-register, and we thank you for your continued support as we seek to improve your experience.
If this is your first visit, be sure to
check out the FAQ by clicking the
link above. You may have to register
before you can post: click the register link above to proceed. To start viewing messages,
select the forum that you want to visit from the selection below.
So I sent these rims out and had them sand blasted, they were black and under that black they were orange. They lookd 100% clean after the blasting no signs of anything left on them, checked with LED light. But after coating them the orange seems to have bleed out thru the blue and the clear.... I am not sure what to do!
I would say that looks more like oil or some other contaminate coming to the surface during cure. Maybe the blaster had some oil residue in the media and it got buried in the metal during blasting?
I had something similar on a new Edelbrock manifold. I blasted the sheet out of those oily spots, wiped it down good with denatured alky and shot the whole thing with another coat...it worked.
That'll add to the work load...doing the clear after the color. It sounds like you're running out of time and options, that's the only thing I can think of to do. Clean all around the spots with the wire brush, clean those spots with alky, dry completely and scuff the rest of the wheel ( so the color has something to stick to ) , wipe or air clean the wheel. Color coat and then clear again...?
I think I might just take the wheel's to the bike shop so they can get hte bike off the lift it is sitting on. When I get back from Cuba I will deal with it.
All I can think of.
Yeah, That's the last resort. All you can do is try to explain what you think it might be and all the checks you did before coating! Hope the shop likes your thoughts and maybe give a discount or something to help make amends? Good luck and have fun in "Koo Ba"!
I think without getting rid of the "oily spots" before coating, you'd just be wasting your time. I tried several color coats on that manifold WITHOUT cleaning the spots first and the spots kept coming through. Only when I blasted those spots away did the color cover those areas.
Comment