Become a fan of Slashdot on Facebook

 



Forgot your password?
typodupeerror

Comment welding glasses? (Score 1) 150

Should be I think -8 or somewhere close (not common), I use a -4 with dichroic coating as well as an additional layer of an active welding filter. Even a scratch can be problematic. I would never trust a 1/1000" plastic filter for anything not replaceable even though the active filter may only be 1/10^100th thick on either..

Slashdot Top Deals

We have a equal opportunity Calculus class -- it's fully integrated.

Working...