[Jewelry making - Article 01202] - Re: [Orchid] Hot torch for propane

[coralnut]

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>         Be careful that you don't crank up the pressure on your
>     regulator to the point you burst your hoses.  The little torch only
>     needs about 6-8psi pressure. Again, I don't know what the air torch
>     takes but I don't suggest cranking the pressure on the regulator
>     all the way up. A full acetylene tank can have 200psi in it. 
>     Probably more than your line can safely take. 


    I believe Margaret mentioned that she was using a Smith ace/air
    torch set up.  If that is the case, unless the hoses are very old,
    there is no problem using a full open single stage 
    regulator....especially if she is using larger tips.  There are more
    than one type of regulator....some with a secondary pressure gauge
    showing pressure to the hose and those with no gauge. The latter is
    made to be opened full.  The former, with a gauge, redlines between 15
    and 30 lbs but full open  does not produce anywhere near 200
    lbs....usually peaking at about 20 lbs max..  Anything near that
    will simply blow out the flame.  My shop tank (with a torch similar
    to the Smith) has a gauge and I keep it about 7 to 8 lbs.  Our tanks
    at the school, with no gauge, are routinely opened full when using
    medium to large tips and we have never had any hose problems.  Of
    course, as I mentioned before, when using smaller tips, the regulator
    valve needs to be backed out else the pressure blows out the flame. 

    Otherwise, as Mark says, the little torch set up only needs a few
    lbs pressure. 

    Cheers from Don at The Charles Belle Studio in SOFL where it is
    raining like crazy and where simple elegance IS fine jewelry!
    dcdietz AT comcast.net 


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