[Jewelry making - Article 00013] - [Orchid] Safety of fans for soldering ventilation

[Alpha Vangard]

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    I have searched repeatedly on the Orchid forums for reference to this
    problem. No where did I see any reference to the safety of fans in
    relation to the exhausting of gases (propane in my case) from the
    soldering area. 

    Grainger Supply would not sell me a shaded pole vent fan (squirrel
    cage) because I told them I would be exhausting small amounts of
    propane when bleeding my hoses. The sparks from the electric motor
    could cause problems (I guess he means they could ignite). 

    On this forum I have seen references to in line fans, muffin fans,
    bathroom fans, Attic fans, stove venting fans and Jenn-Air fans. As I
    understand in all of these, the motor is in contact with the exhaust
    fumes. Is this is a serious problem? 

    The only fans I can find for exhausting flammable gases are very
    expensive and much more fan than I need. At another studio which I
    shared, I used a squirrel cage type fan mounted right next to my
    soldering area for 10 years with no problems. 

    This fan is for a small studio in my basement. I will be storing the
    Propane outside and copper plumbing it in with a turn off. Natural
    gas is not possible in my situation. My furnace guy will set this up
    for me, but he doesn't know what type of fan to use for exhausting
    gases and fumes. 

Thank you,
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