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anti-rust copper?

Post about things you have launched or thought about launching. Also post about various materials used for building cannons. No posts about explosive projectiles!
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Unread postAuthor: Acdcmonkey1991 » Fri Aug 17, 2007 7:39 am

I'd say just shine it up with some Wd-40. Or do the salt and vinegar method. But not to often, as it eats away the metal.
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Unread postAuthor: jimmy101 » Fri Aug 17, 2007 7:21 pm

1. You can also clean copper without scrubbing and nearly instantly with Muriatic acid (concentrated hydrochloric acid), available at most hardware stores for a couple bucks per gallon. Muriatic Acid will eventually dissolve the entire piece of copper so don't leave it in the acid too long.

2. Liquid water is not required for copper (or any other metal) to rust. Humidity in the air is sufficient.

3. Probably the best way to keep copper looking shiny is to coat it with lacquer or other clear topcoat like Joanna said. That is how copper flashing and copper magnet wire is protected. Belt buckles and buttons made of brass, bronze and copper are usually lacquer coated.

4. Removing the coat of copper oxide(s) is not going to significantly thin the pipe wall. The coat is very very thin, usually only a few thousandths of an inch thick.
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Unread postAuthor: Gepard » Fri Aug 17, 2007 7:29 pm

In theory can't you stick a piece of galvanised pipe on the copper somewhere? Since the Zinc in the galvanised pipe is more reactive than the copper it should protect it........Right?

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Unread postAuthor: Marco321 » Fri Aug 17, 2007 7:37 pm

I would steer away from a physical barrier like oil, because if it cracks, gets stressed, the barrier comes off and comes into contact with any moisture, the pipe will oxidize in the place with the least amount of oxygen, like under the paint, this is accelerated oxidation called differential aeration.

Your best bet would find a way to protect it chemically, such making a sacrificial anode. Maybe go down to the hardware store and ask them how to protect copper, or look on the internet.
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Unread postAuthor: nivekatoz » Tue Sep 04, 2007 7:18 pm

You could use past wax or car wax on the inside and out side... That should protect it for a while....

I personly would spray paint the outside and wax the inside....
I woud paint the outside with truck bed liner spray paint ..Thats some tough stuff.......

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Unread postAuthor: dongfang » Wed Sep 05, 2007 3:42 pm


Sacrifical anodes are only good in water ... :) (and other conductive fluids).

Copper lacquer would be my choice. That´s what is used on those lanterns, lamp screens etc. that need no repolishing.

I once diluted mixed epoxy cement on acetone as an _emergency_ lacquer. It worked really well!

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