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I Forge Iron

How low to run the ox/ac tanks


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With oxygen, you can run until there is no pressure in the regulator. I have been told not to do the same with acetylene but I know I've had it down to 4-5 lbs and no acetone got into the lines. At that point, you're wasting time trying to extract that last little bit. I usually change tanks when I have a project coming up and will refill even if there is something left so I don't run out in the middle.

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