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Old 05-15-2012   #1
Steamboat Springs, Colorado
Paddling Since: 2004
Join Date: May 2012
Posts: 9
Phosphoric vs. Muriatic for aluminum frame coat

With my bare aluminum pipe, do I need to prep the aluminum or can i just spray it straight away with the clear spray paint? The only hardware store in my small town has phosohoric acid, but its in a product called "Naval Jelly" and specifically says not to use it on Aluminum. Would the 10% muriatic acid solution be better for coating the bare pipe? Thanks!

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Old 05-15-2012   #2
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portland, Oregon
Paddling Since: 1991
Join Date: Apr 2011
Posts: 2,188
Home depot might carry phosphoric. Seem to recall they did when we were trying to etch white stuff off of pavers.

Watch episode 2/3 of "breaking bad" to learn the proper technique of using acid

Hey, if you want me to take a dump in a box and mark it "guaranteed", I will. I got spare time.
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Old 05-15-2012   #3
Lemooreq, California
Paddling Since: 1969
Join Date: Apr 2012
Posts: 60
White vinegar should work.
What are you painting with?
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Old 05-15-2012   #4
Steamboat Springs, Colorado
Paddling Since: 2004
Join Date: May 2012
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I just picked up a bottle of "Acid Magic user friendly muriatic acid" and "Rustoleum: Crystal Clear Enamel" spray paint. Does that sound like it will work?
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Old 05-15-2012   #5
Steamboat Springs, Colorado
Paddling Since: 2004
Join Date: May 2012
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So I went with the muriatic for etching, the muriatic stains are only barely visible, much less noticable than I was anticipating. The spray on enamel is currently drying, looks good so far. 1 can is good for 2 light coats on 40feet of 1 1/4 aluminum piping.
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