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Author Topic: rusting metal.  (Read 935 times)
draxthedestroyer
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« on: September 09, 2010, 03:03:11 pm »

I am building a lamp out of metal fittings and I was wondering how I would go about rusting the steel and oxidising the copper.
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JingleJoe
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« Reply #1 on: September 09, 2010, 03:17:27 pm »

Salt water, spray it on for an even coating and make sure your metal is really clean or the oxidization/corrosion, won't stay on.
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jringling
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convicted Rogue and Vagabond…long story…


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« Reply #2 on: September 09, 2010, 04:21:47 pm »

A good prep for the salt spray is either heating until just red or sand blasting.

Another option for both the steel and copper is gun blueing solution. If left on for too long, the solution develops a nice rusty red coating on steel and a dark black on copper. Then you just sand with 00 steel wool to the desired finish...
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Narsil
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« Reply #3 on: September 09, 2010, 04:50:00 pm »


Clean down to bare metal, particularly removing any mill scale from the steel, and degrease.

Ferric chloride, vinegar, hydrogen peroxide and salt water (not together) will all accelerate oxidation.

It's generally good to brush off any loose material and repeat the process a few times to get a reasonably stable layer.

It can be sealed with boiled linseed oil, thinned about 50/50 with white spirit which will give a slightly glossy finish or wax paste which will give more of a matt finish, the wax can also be thinned with white spirit for better penetration.
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draxthedestroyer
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« Reply #4 on: September 09, 2010, 10:20:09 pm »

Should I use sea salt? I'm assuming that's the type of salt it should use?
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Narsil
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« Reply #5 on: September 09, 2010, 10:26:05 pm »


Doesn't really matter as long as it's sodium chloride.
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jringling
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convicted Rogue and Vagabond…long story…


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« Reply #6 on: September 09, 2010, 10:42:26 pm »

any salt dissolved in water OR grind the salt to a fine powder, spritz the metal with water and sprinkle/roll the piece in the salt... same result but different effects...
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