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John G John G is offline
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Default How do welding shade numbers add up? Eclipse viewing.

mike used his keyboard to write :
I want to look at the eclipse this weekend.
Everybody says a #14 welding shade is good.
I don't have one.

So, how do the numbers stack up when you use 2?
I'm guessing it's not linear, so 7+7 doesn't = 14???

What's the math for stacking welding shades?

Thanks, mike


Try These for a better view.

http://www.sunguntelescope.com/MAIN.html

http://cdn.transitofvenus.org/docs/B...Sun_Funnel.pdf

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John G