On Mon, Sep 24, 2012 at 4:06 PM, PJ McGarvey <pj_mcgarvey at hotmail.com> wrote: > So I just want to be safe here, is there anything I can/should do to test this > out so I know it will work when I spark up the welder? Mine will darken when pointed at the sun... Jeff Scarbrough Corrosion Acres, Ga.