[Jewelry making - Article 00116] - Re: [Orchid] Infrared light

[Donna E. Shimazu]

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>     We have found that a shade 2.0 filters 98% or better of the IR,
>     while still allowing 40% visible light. Compare this to a shade 5
>     (the usually available filter) which filters 99% of IR and allows
>     only 5% visible light.

    Mike, I got rectangular lens plate from the local welding supplier. 
    It was listed as a Shade 5 and had a gold-tone metallic coating. 
    Looking through it, I had much greater visibility than I would have
    had looking through the usual green Shade 5 lens.  Is this type of
    lens comparable in protection to the green Shade 5 lens?  If so, it
    is so much easier to work using this gold-tone lens because I don't
    have to flip it up to place solder pallions when doing platinum work.
     The fellows at the welding supply shop said that the two lenses were
    comparable, but I'm curious to hear your thoughts on the subject. 

    Thank you, Donna 

    p.s. I use the lens attached with longer screws over my Optivisor
    lenses.  

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