I make 1 1/2" marbles, hoping to get a little bigger sometime. So I would have to have separate concentrators for the inner and outer flames? Or maybe I could have a concentrator for the inner flame, and have a tank for the outer flame, and at least I would be using less tanked oxy that way? I don't think I can afford two or three oxycons right now. how much is the M20?
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- Brie
My etsy:
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