[Jewelry making - Article 00035] - Re: [Orchid] Little Torch Oxygen Use

[Doug Harroun]

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>      Just a turn of the knob and I can change from acetylene to
>     propane in the little torch.

    Please correct me if I'm wrong. This is a no-no. There are hoses
    made for acetylene, and there are hoses made for fuel gasses (T
    grade?). They are not under any circumstance interchangeable. I'm not
    an engineer or anything, and I can't authoratively state why this
    should not be done, but in all my training as a welder, glass blower,
    and now jeweler, I've always been told not to mix hoses. I don't see
    a physical difference between fuel-gas and acetylene hoses, but they
    are printed one way or another, and costs vary between the 2 (this
    may be related to different suppliers). Also, the Little Torch system
    is made for one or the other, but not both, a look at the box and
    you'll see there's a check box for oxy/propane or oxy/acetylene. This
    may all be undue paranoia, but I thought I should speak up =P 

Take care
-Doug Harroun

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