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Originally Posted by |kbn|
That would be an advantage 
the idea I had was to have the chamber so the gas goes in, but doesnt go out untill the casting has finnished, so that there is a high pressure on the molten silver, which i can only assume would result in a better cast?
How much would nitrogen cost and where would it be sold/what is it used for? |
I thought that casting was done in a vacuum in order to keep bubbles out. Wouldn't you just have nitrogen filled bubbles instead of air filled bubbles?