Ok not my week for powder coating I guess!

[Guest]

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!

[BeeBob]

Re: Ok not my week for powder coating I guess!

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?

[Guest]

Re: Ok not my week for powder coating I guess!

I dunno... I'm stressed the rims should have been done yesterday and I am leaving the country in a few days for a week.

[BeeBob]

Re: Ok not my week for powder coating I guess!

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.

[Guest]

Re: Ok not my week for powder coating I guess!

yea problem is time. That and my blaster has left town too. I'm screwed

[BeeBob]

Re: Ok not my week for powder coating I guess!

How about a wire brush attachment on a drill? "Scrub" the areas clean with the wire, wipe down and shoot again?

[Guest]

Re: Ok not my week for powder coating I guess!

just those area's?

this was a 2 stage powder with a base coat and a top coat.

[BeeBob]

Re: Ok not my week for powder coating I guess!

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...?

[Guest]

Re: Ok not my week for powder coating I guess!

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.

[BeeBob]

Re: Ok not my week for powder coating I guess!

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"!

[Guest]

Re: Ok not my week for powder coating I guess!

You don't have a stripping tank? Where you could strip them and reshoot?

[Guest]

Re: Ok not my week for powder coating I guess!

How about hitting the bleed-through areas with KL primer and recoating?


Jay

[BeeBob]

Re: Ok not my week for powder coating I guess!

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.

[Guest]

Re: Ok not my week for powder coating I guess!

You don't have a stripping tank? Where you could strip them and reshoot?

No tank..... Cannot ship it into Canada, so I am waiting for the PBTP Canada to open so I can order some.

[Guest]

Re: Ok not my week for powder coating I guess!

there is no back roads between me and the US.... just a big LAKE!