[TheForge] Vision damage and welding shields pt 2

Mon Jan 13 11:52:00 2003

ok I'm not a scientist I only have experience. I have been welding Damascus
for about 10 years now. I suffer from migraines and if you know migraines.
you know that they are a Light active/sensitive condition. this is what I've
learned. I work almost entirely in a gas . if I weld all day without glasses
I've a mid headache the next day. if I use green welding glasses I  have a
major migraine the next day. If I use didymium I have no headache. and if I
use didymium/gold glasses I can see the different metals at welding heat.
this is my experience
Dan Scheid
Flying horse forge
http://home.earthlink.net/~chevalvolant/flyinghorseforge.html
No, this isn't quite true.  That same wavelength is produced by almost all
fires because sodium is so common.  A clean gas flame is blue, but the
flames you see in a gas forge (as well as a coal forge) are yellow due to
the sodium present.  The didymium lens filters out this bright yellow light.

Now whether that will help you with your forging is another question
entirely.  I would think that once you get used to it, it would help you see
the true heat color past that bright sodium flare.  I haven't tried it
myself.

Bruce
NJ

>>> [email protected] 01/11/03 09:18PM >>>
Didymium is used to filter out a specific wavelength of light produced by
sodium glass.
If you don't work with sodium glass, there's no need for didymium lenses.
None.

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