[Jewelry making - Article 01038] - Re: [Orchid] Dust collectors

[Malarkey Jason D]

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    The whole PVC pipe/static electricity/dust explosion risk is
    overblown. There is a lower limit to the dust concentration before it
    even begins to be possible to have a dust explosion.  It works out to
    about 3 lb. of fine dust per minute for a 1000 CFM dust collector. 
    I'd have a hard time generating that much fine dust in a minute using
    any tool or even pair of tools in my woodshop, much less in the
    jewelry shop. You should be far more concerned about sparks landing
    in the dust pile and starting a fire.  Here is a well researched
    article, that discusses the issue. 

   http://mywebpages.comcast.net/rodec/woodworking/articles/DC_myths.html

Jason


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