[Jewelry making - Article 01075] - Re: [Orchid] Acetylene fumes, could it be a flashback?

[Noel Yovovich]

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>     went to bleed the line but couldn't touch the torch handle as it
>     was too hot to touch. 

    This has happened where I teach. It appears to me that it can happen
    that the torch doesn't get quite shut off, and the flame is somehow
    burning down in the handle. I have only seen this happen when using
    a very large tip. The solution would seem to be to be extra careful
    turning the knob fully off. 

Noel

 
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