[Jewelry making - Article 00823] - Re: [Orchid] Meco Midget Torch Tips?

[Judy Hoch]

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    Carla - tips for the Meco Midget are a bother.  Don't get me wrong,
    I absolutely love the torch.  Since Victor bought the Meco company,
    they have done a lousy job of keeping up with what we need. What's
    worked for me is the following - a #40 tip for small work and medium
    gold stuff.  I have, but don't like, the N-0, N-1 and N-2 tips.  My
    work horses for silver are the ventilated tips, #3,5, and 7.  Now
    all I can find to replace them is #0, 1, and 2. 

    The reason your flame is blowing out is that you have too much
    pressure from your oxygen bottle.  I use a two stage gauge made by
    Meco that lets me read low pressures accurately.  I have residential
    natural gas pressure, the 4 oz kind, and set my oxygen to deliver at
    8 pounds.  I originally had a conventional two stage gauge on the
    oxygen bottle, and it did exactly what's happening to you.  I
    vaguely recall that ottofrei has the low pressure gauge.  The max
    pressure this gauge delivers is 60 pounds, and it is graduated in 2
    pound increments. 

    You may also note that sometimes very tiny orifices on your tip will
    require an even lower pressure initially. 

Judy Hoch

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