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Liquid Metal Forum The art and science of melting crap ... on purpose!

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  #1  
Old 04-05-2007, 02:18 PM
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B.Finnigan B.Finnigan is offline
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Nickel silver casting.

I needed a 1 1/8" round bar of nickel silver and was not able to find any. So I had no choice but to make one. I started with nickel silver powder and made a disposable crucible out of Greencast3000 furnace cement.

Here is video of the pour. Since nickel silver can have 40-60% zinc the fumes are very irritating and I used good air flow during the melt with a box fan.
http://www.youtube.com/watch?v=Qt6EJdBLLfA

The mold was cast by using a small plastic container filled with refractory cement and a 1 1/8" dowel coated with wax poked in. When the cement started setting up I pulled the dowel out. That also speeds up th drying process. After it dried I baked it at 250 for three hours to remove any water.


Last edited by B.Finnigan; 04-05-2007 at 02:22 PM.
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Old 04-05-2007, 09:56 PM
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Exclamation

Please do that outside and with a fan or proper hood also !!
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Old 04-16-2007, 10:00 PM
Doug Lester Doug Lester is offline
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Thumbs up Nickel silver casting

What flux, if any, did you use? What was the surface of the bar like after demolding?

Doug Lester
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Old 05-05-2007, 12:21 PM
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I used a pinch of magnesium to flux. The bar had some small inclusions but I have not done any maching on it yet.
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Old 05-05-2007, 01:32 PM
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Man, that's neat. Is there a good source for the Nickel Silver "powder"?


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Robert Hensarling
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Old 05-08-2007, 01:43 PM
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I got mine from material-resource.com but it was being cleared out and I am not sure if they have any more.
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Old 05-08-2007, 01:56 PM
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Ok, thanks. I really don't have any business attempting that kind of thing anyway, not enough background.


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Old 05-08-2007, 06:35 PM
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I never had any formal training, just started melting and pouring. Playing with molten metal is every bit as fun and addicting as beating on carbon steel.
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