Portis
07-02-06, 11:45 AM
I am looking at a voodoo MTB frame on ebay. Seller says it was recently powdercoated by Arizona Powdercoat. What questions should i ask seller? Should the old finish have been removed first?
View Full Version : Powdercoating a Frame
Nessism
07-02-06, 12:16 PM
Yes, old finish should be removed first. I don't think you have to worry much as long as the paint looks good.
SingleSpeeDemon
07-02-06, 12:18 PM
I am looking at a voodoo MTB frame on ebay. Seller says it was recently powdercoated by Arizona Powdercoat. What questions should i ask seller? Should the old finish have been removed first?
From my understanding, the old painted finish HAS to be removed prior to powdercoating; (1) for the powder to adhere via static charge and (2) the original paint finish would likely fail in the high temperature (400?) oven.
From my understanding, the old painted finish HAS to be removed prior to powdercoating; (1) for the powder to adhere via static charge and (2) the original paint finish would likely fail in the high temperature (400?) oven.
Portis
07-02-06, 01:49 PM
Yes, old finish should be removed first. I don't think you have to worry much as long as the paint looks good.
What do you mean, I shouldn't worry much? IF the old finish wasn't removed, that tends to make me worry if it is supposed to be removed. ;)
What do you mean, I shouldn't worry much? IF the old finish wasn't removed, that tends to make me worry if it is supposed to be removed. ;)
ZachS
07-02-06, 01:59 PM
sandblast removal of old finish is routinely included in the price of a powdercoat, and it would surprise me immensely if i found out that a powder shop coated anything but a bare frame. this is a non-issue.
twahl
07-02-06, 08:45 PM
Powder will not stick to paint, and even if you could layer it on there somehow, when it was cured it would run away from the paint. The frame has to have been stripped to be powdered.
Dr.Deltron
08-20-06, 12:49 PM
+2
ZachS & twahl are absolutely correct!
If the frame was powdercoated recently, you are all set.
Good luck on your bidding.
as a note, different powders bake at different temps. Some melt as low as 275 degrees F, others closer to 400 degrees F.
2nd note, powdercoat does NOT work well over paint, but you CAN PAINT over powdercoat with quality automotive paints/clears.
3rd note, to remove powdercoating, Jasco paint/epoxy remover is one of the best ways. Sand/silicate/wallnut shells blasting is NOT the way to go!!! Powdercoating is highly abrasion resistent and blasting, being a form of abrasion, will probably ruin your frame before the PC is completely removed.
ZachS & twahl are absolutely correct!
If the frame was powdercoated recently, you are all set.
Good luck on your bidding.
as a note, different powders bake at different temps. Some melt as low as 275 degrees F, others closer to 400 degrees F.
2nd note, powdercoat does NOT work well over paint, but you CAN PAINT over powdercoat with quality automotive paints/clears.
3rd note, to remove powdercoating, Jasco paint/epoxy remover is one of the best ways. Sand/silicate/wallnut shells blasting is NOT the way to go!!! Powdercoating is highly abrasion resistent and blasting, being a form of abrasion, will probably ruin your frame before the PC is completely removed.
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