Powder coating prep work question?

[Kreukishot]

I went through the yellow pages...called well over 15 shops in the LA area...prices range from 80-250 dollars to powder coat some brake calipers. However, I was wondering if anyone had any experience with any good shops. Many of the shops I called don't go through the "iron-phosphate" process before the actual powder coat is applied but all shops told me they go through the sand-blasting. Is the Iron phosphate really needed to get a good bond between the metal and powder coat?

If anyone has any references to reputable shops (I don't neccesarily want to drive all over LA to look at some samples of work they did) or an answer to the iron phosphate question that'd be great.

Thanks a lot,Chris

[Kreukishot]

regarding powdercoating....has anyone had problems with their powdercoated calipers? i've read that baking them at the required temperatures in the powder-coating process weakens the structural integrity of the caliper itself. If anyone could make any comments on this that'd be great

Thanks,Chris

[onosqv]

It is because, technically, the temperature which these things are baked will "hurt" calipers that are aluminum.

I know there's a bunch of ppl who have had their calipers powdercoated & rims powdercoated w/o a problem... so take it w/ a grain of salt.

If you have iron calipers, you're set to go.

Check out the groupbuys section on zilvia - I remember there was a company there doing powder coating and have done so for many members w/o complaints.