[Jewelry making - Article 00379] - Re: [Orchid] LPG vs Acetylene

[John Donivan]

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>     open the LPG tap first and ignite a flame....Is that the same as
>     using the Acetylene? 

    No. With acetylene you need to crack the oxygen before you light it.
    If you don't you'll get little veils of carbon floating around the
    room, which is cause for firing in a welding shop (old joke).
    There's even a cute name for them that I forget. The flame is the
    hottest of the common gases, which is a mixed blessing at times. One
    thing I like is that it opens up the world of gas welding and
    brazing, too 

http://www.donivanandmaggiora.com
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