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Old 04-06-2009, 02:46 AM
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Aluminum Wheel Painting / Aluma Prep Application Help Needed

I have lightly blasted a set of 15 spoke turbine style wheels and wet sanded the fins and rings with 1500 grit. I am happy with the results of the sanding and have taped them off for web painting to color match to my vehicle paint. My question is; what is the proper name of the acid etch needed to wash the taped off wheels before I spray on the color? I'm not a body & paint guy but know enough to shoot some wheels. I haven't done aluminum by myself and would like some info for the do it myselfer. I've been told the aluminum needs to be etched prior to painting.

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Old 04-06-2009, 03:46 AM
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There are etching primers on the market. I think Eastwood has one, but not sure if it works with aluminum. I would check with your local body shop supply place and they will point you in the right direction.
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Old 04-06-2009, 09:07 AM
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I use an self etching epoxy on alloy that saves me a lot of time and gives a better job IMO..Just blast and paint that way..

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Old 04-06-2009, 06:42 PM
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Hey Sam, is this etch actually in the paint or is this a separate procedure prior to paint. I would think it's not in the paint? Is it something I spray on and rinse off with water then dry before painting? Not to sound to dumb here but I'm learning? John

I will ask the local Industrial finishes store here about Aluminum etching materials. Thanks for your replys Guys!
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Old 04-06-2009, 07:58 PM
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Quote:
Originally Posted by jmacs53Willys
I have lightly blasted a set of 15 spoke turbine style wheels and wet sanded the fins and rings with 1500 grit. I am happy with the results of the sanding and have taped them off for web painting to color match to my vehicle paint. My question is; what is the proper name of the acid etch needed to wash the taped off wheels before I spray on the color? I'm not a body & paint guy but know enough to shoot some wheels. I haven't done aluminum by myself and would like some info for the do it myselfer. I've been told the aluminum needs to be etched prior to painting.
I have used Alumiprep 33 followed by Alodine then epoxy prime etc. and seemed to work well. Here is some good info
http://www.ronjoseph.com/painting-aluminum.htm

http://www.ronjoseph.com/Q&A/B2001_p...g_aluminum.htm

Vital that Al is prepped correctly then primed shortly after so as not to allow the oxide coat to reform.
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Old 04-06-2009, 08:27 PM
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remember you only have 8 hours to spray aluminum after you sand/skuff it to make sure it gets proper adhesion most people forget that but i had it drilled in my head when i was doing an aluminum boat while working at a bodyshop

and use a wax and greese remover before you spray

This is what i use


https://buyat.ppg.com/refinishProduc...e-a2400381ed7c

hpe it helps

Last edited by low50s; 04-06-2009 at 08:31 PM. Reason: added ppg info
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Old 04-07-2009, 03:58 AM
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Good info guys. Thanks for your time! Jmac
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