I'm in the Antelope Valley. I had my eye on a few small oxy tanks on Craigslist for $40 each, thinking that if I had a couple of small ones I could switch them out and they would probably last a month. What I read and was told by a teacher was the one concentrator wasn't enough to keep up with the demand of the torch, so your flame wouldn't be hot enough. I suppose maybe it depend on the size of the concentrator. Do they come in different sizes? All I've found online are small medical ones.
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