How do welding shade numbers add up? Eclipse viewing.
On Thursday, May 17, 2012 at 1:53:14 PM UTC-4, mike wrote:
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
My welder's supply store stocks #5 and #10. I bought one of each and stacked them and they compare favorably to the #14 i already have. Mathwise, they check out also (OD = 5.564)
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