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  #21  
Old 03-05-2019, 08:44 AM
Marc Bourget Marc Bourget is offline
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"Cheater Lens" Rule of Thumb


If you wear your Rx Glasses under your helmet and feel magnification would help, I found out, due to what I was welding, my "distance" from the work changed, and queried my College Roommate, now an Optometrist.


Granted this opinion was given while he was driving to work, but he gave the following guideline, which may affect how you approach selecting cheater lenses.


For the following focal distances, he suggested starting with the following lens power:


12" +3.0


16" + 2.5


24" +1.0-1.25


For those without the need for prescription (Rx) lenses he suggested the following: here in California, we have CVS Stores. To "fine tune" for personal use, he suggested going to their reading glasses display and using a printed card to check focus, sample the various magnification powers at distances you feel you'll be working and "test" what magnification powers work best for you!


HTH


Marc
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  #22  
Old 03-07-2019, 09:31 AM
ojh ojh is offline
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I followed Richards' advice and now the both the -5 & -7 lens, there doesn't seem to be a -6 available.
I've been using the -7 to weld 18ga without any strain or worrisome effects on my eyes. I haven't even tried the -5. I haven't done long periods of welding as yet, hopefully today I'll have fitted a new panel in place and will be able to spend a couple hours under the hood.
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  #23  
Old 03-07-2019, 12:10 PM
TheRodDoc TheRodDoc is offline
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Just google -- Welding Lens shade 6 --

Just some choices.
Some are 2 x 4.25 and some are 4.5 x 5.25 -- The second one also has lens for aluminum welding.

https://www.fastenal.com/products/details/0800507

http://www.phillips-safety.com/weldi...green-579.html

https://www.amazon.com/Large-Welding.../dp/B01I05VTXS -- 4.5 x 5.25
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  #24  
Old 03-07-2019, 12:56 PM
crystallographic crystallographic is offline
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Quote:
Originally Posted by TheRodDoc View Post
Just google -- Welding Lens shade 6 --

Just some choices.
Some are 2 x 4.25 and some are 4.5 x 5.25 -- The second one also has lens for aluminum welding.

https://www.fastenal.com/products/details/0800507

http://www.phillips-safety.com/weldi...green-579.html

https://www.amazon.com/Large-Welding.../dp/B01I05VTXS -- 4.5 x 5.25

I do not recommend the Phillips' glued sandwich filter plate that he sells for aluminum gas welding - no published safety specs, and it is just an S2 didymium glued to a standard shade 3 glass plate. Nuttin' special but the $100 price.
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  #25  
Old 03-07-2019, 12:59 PM
crystallographic crystallographic is offline
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(I followed Richards' advice and now the both the -5 & -7 lens, there doesn't seem to be a -6 available.)


OJ,
I can send you a #6 glass if you need it.
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  #26  
Old 03-07-2019, 01:15 PM
ojh ojh is offline
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Originally Posted by crystallographic View Post
(I followed Richards' advice and now the both the -5 & -7 lens, there doesn't seem to be a -6 available.)


OJ,
I can send you a #6 glass if you need it.
Thanks Kent, I'll go to Fastenal. Killer is I was right next door to fastenal this morning. Whats the chances of an autographed radius gauge?
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