[Jewelry making - Article 00420] - Re: [Orchid] LPG vs Acetylene

[Alastair]

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Hi Raakhi,

    Oxy-Acetylene torches are lit the same way as oxy-LPG, and yes
    oxy-Acetylene is hotter. When lighting the acetylene, a small cloud
    of black soot will float through the air until you turn on the
    oxygen. A plumber friend of mine prefers oxy-LPG because he does not
    want the black soot dirtying his customers houses. A good ventilation
    system will solve the soot problem, but in time it will blacken
    everything in it's path. 

    Oxy-LPG will do your melting if you have the correct nozzle. The
    most economical solution may be to get a melting nozzle for your
    existing little torch set-up. To add acetylene to your system will
    require a new gauge or adaptor, a new cylinder, and also a melting
    nozzle. 

    I use a LPG gas-air torch for most jewellery work and a
    oxy-acetylene welders torch for melting, fusing, soldering big
    silverware items, soldering ring shanks while in the mud bath, and
    for making steel tools - forging, welding, hardening and tempering.
    Having used a little torch in the past I prefer the two heating
    methods described; they are efficient and versatile except for the
    soot which ends up everywhere despite the precautions I take. 

Regards, Alastair
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