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Building a vacuum assisted caster for silver and gold.

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Author Topic: Building a vacuum assisted caster for silver and gold.  (Read 1497 times)
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« on: January 20, 2016, 11:50:40 pm »

I'm having trouble finding a machined aluminum box for this vacuum chamber to fit around the flanged/perforated flask. I read somewhere about people converting pressure cookers into vacuum chambers, so I'm wondering if I can take an old pressure cooker and install a vacuum gauge and a line in for my vacuum pump.

I'll be hitting a few shops tomorrow to see what I can find that's large enough for this and still cost effective. I'm going to be using a 3" diameter flask with the flanged edge. Anyone know a good place to find one for cheap?
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