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Topic: Cor ten metal
Message: Posted by: Dr. Solar (Feb 24, 2011 12:09AM)
I've been looking for cor ten metal for some projects but here in California it seems I have to buy a ton minimally. Yeah, right! Cor ten is a sheet metal that you wet and it rusts very rapidly and once this rust patina is set, it maintains unchanged there after. Some refer to it as "weathered metal". Somewhere I read that you can take sheet metal and clean off all oils and put muratic acid on it to create this rust. The cor ten does not rub off onto your hands like most rust. Others might say to put the metal under my rabbits favorite corner might do the trick. What's say?

Doc
Message: Posted by: hugmagic (Feb 24, 2011 06:52AM)
Have you tried online metals?

Richard
Message: Posted by: thegreatnippulini (Feb 24, 2011 09:10AM)
Yup, Cor-ten is usually used on bridges, large buildings and military projects. You could search around online to see if you could get a small amount, but usually it is sold for major construction work. One way I have gotten "unobtanium" steel is by finding a manufacturer and asking for a test sample.

For the same effect as patina Cor-ten, use mild steel. Let it rust, then heat to around 350-400 degrees and rub oil, wax, or oil-wax mixture to seal it. You will still have that beautiful rust without worry of it rubbing off. Some use clearcoat sealants as well.

What is the intended use for the metal? Project idea?
Message: Posted by: Dr. Solar (Feb 24, 2011 11:07AM)
Thanks Richard, your shower of sweets bag are going in the mail this morning w/ instructions. I have looked on line but suppliers here in Calif. say it is mostly used back East and have no stock here. I do have one more supplier to call.

the Great Nippulini, thanks for the tip on finishing the rust. Yes, I only need like a 1' X3' piece. I guess I could ask for a "sample" and pay a bit more for shipping. I need to make some bands around a drum but need that old beat weathered look. What is unobtanium? unobtainable?

Doc
Message: Posted by: AGMagic (Feb 24, 2011 12:22PM)
You can always paint the "rust" on with a sponge. Use 2 or 3 different colors of brown over a black or silver base coat. Dab the browns on with a sponge and it will look convincingly like rust.

Unobtanium is an engineering term used for material that can not be found.
Message: Posted by: makeupguy (Feb 24, 2011 01:47PM)
For more realistic 3-D rust.. you can use flocking.. you can get virtually any color of flocking in small-ish quantities here..

http://www.frendsbeautysupplyonline.com/search.aspx?find=flocking

I saw this on a display for a well known auto product and thought it looked GREAT!!
Message: Posted by: Dr. Solar (Feb 24, 2011 09:50PM)
Thanks for these tips. Speaking of paint, I was thinking today that model railroad shops has some finishes that either speed the rust process or you paint it on. I called the last metals suppler around here today and it was a no-go. I went ahead and committed to copper bands that will tarnish shortly.
Doc
Message: Posted by: remote guy (Feb 24, 2011 11:46PM)
Check out this Copper Veneer. I am going to be using this on a upcoming project. They sell 8" x 10" sample sheets.


http://www.veneersupplies.com/products/Copper-Veneer-Sample-8-x-10.html


Nick
Message: Posted by: Dr. Solar (Feb 25, 2011 01:25AM)
Looks good. Couldn't tell if it is metal or formica. Perhaps I will get a piece for general use. I'll find something for it. Rain, rain, go away...

Doc
Message: Posted by: MentalistCreationLab (Feb 25, 2011 01:31AM)
Yeah Cor ten steel is more of a name branding thing. When I had the wrought iron fence company we looked in to Cor Ten steel and our distributor at the time said that its a name brand of steel.many of the cold rolled steels will have the exact same properties. So you may want to test a small piece of cold rolled steel could save you some time and money. If you still need Cor Ten call Alro steel they should have one in your area.
Message: Posted by: Dr. Solar (Feb 25, 2011 01:46AM)
Thanks a lot MentalistCreationLab. Long ago I had friends in a collective that made beautiful wind chimes. They went through this stuff by the tons but I do remember they said it was special order and come in on a huge long pallet. It rusted rapidly after one spray of water, within days it was totally rusted to the max and yet I still have one of the chimes from 30 years ago and it seems to have never lost strength or body to excessive rusting beyond that initial fix.

Doc
Message: Posted by: thegreatnippulini (Feb 25, 2011 08:35AM)
Hey Mentalist.... have any real wrought leftover from the fence company? I use pure wrought when making laminated welded billets of "damascus" steel (another name "branding"). I forge wind chimes from high carbon spring steel. Just as rusty, but rings much nicer.
Message: Posted by: MentalistCreationLab (Feb 25, 2011 12:45PM)
Thegreatnippulini, I check my shed I may have a few small pieces left over form the company. If I have any of the stuff its yours if you want it. Most of the old stuff is gone but I do remember seeing some very early cast iron finials from the turn of the 20th century and may fave some of the old forge iron left.

Man, I Do not miss working in 120+ degree temp. Some days it was rough.
Message: Posted by: en2oh (Jul 2, 2011 08:57AM)
[quote]
On 2011-02-24 01:09, Dr. Solar wrote:
I've been looking for cor ten metal for some projects but here in California it seems I have to buy a ton minimally. Yeah, right! Cor ten is a sheet metal that you wet and it rusts very rapidly and once this rust patina is set, it maintains unchanged there after. Some refer to it as "weathered metal". Somewhere I read that you can take sheet metal and clean off all oils and put muratic acid on it to create this rust. The cor ten does not rub off onto your hands like most rust. Others might say to put the metal under my rabbits favorite corner might do the trick. What's say?

Doc
[/quote]

Hi Dr Solar,

Have you given Metal Supermarkets a try? I source a lot of small quantity metals there and they will do there best to find really obscure alloys. Cor-Ten falls into the general catagory of "weathered steel". Check out roofers as weathered steel has become a popular (well, more or less now ) architectural accent, in particular its found it's way onto the top of houses/buildings. Apparently copper patina is similar but maintains the green color where the steel maintains the deep oranges and browns.

Keep us posted.

Doug
Message: Posted by: Dr. Solar (Jul 3, 2011 01:14AM)
Hi Doug,

I went ahead and used copper. Buried it a bit in my rabbit manure for a couple of days. It's okay but the cor ten would have worked much nicer. I'll give your link a try for any future work. Thanks,

Doc