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Watching the eclipse--welding lenses

digger242j

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Ok, I searched the internet a little bit, and the consensus seems to be that a shade 14 lens is ideal, and you don't want to use lighter than a shade 12, which is ok for limited viewing.

I have a couple of 2" X 4.3" shade 12 lenses, and they'll fit into cutting goggles, but I have a handful of shade 10, and shade 5. Would stacking those two shades add up to 12 or better?

I know somebody here will know.
 

Old Doug

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I found several pairs of new eclipse glasses in my dads stuff . I am going to take them to work Monday and give them away.
 

Acoals

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I watched the eclipse a few years ago with a welding hood, seemed fine. I think I turned it all the way dark, if I remember correctly. I don't think I actually watched long, more or less long enough to make sure it was safe and then gave the hood to the kids . . .
 

digger242j

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Here at home it's not going to be total, just about 97%. Where my kids are going to be it'll be better than 3 minutes of totality. I'd like them to be able to experience it, safely of course.

I don't plan on watching it for an extended period, so I'm comfortable taking an occasional peek with a shade 12. I'm seeing stories about fake eclipse glasses being sold, so I'd be happier knowing they're going to use something that really is dark enough.
 

terex herder

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I chased the '17 total eclipse, cool thing. We had about everything, pinholes, special glasses, welding helmets. It was neat to experience, but chasing it with wife, son, and daughter-in-law was better than the eclipse itself.
 

Shimmy1

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Looks like you should be ok with 2-10s stacked, but it is the internet.......

 

Birken Vogt

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I've watched eclipses for decades with whatever welding hood was handy. Never for long periods, though. I don't find it interesting enough to just sit and stare anyway.
 

digger242j

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Looks like you should be ok with 2-10s stacked, but it is the internet.......

Yeah, but so is HEF. :)

Thanks though. That was an interesting read.

I just experimented with 2 x10 vs 10+5. Using a really bright flashlight shining from behind, a 10 plus a 5 looks pretty similar to a 12 by itself. Might be a bit darker. Two 10s together, and I couldn't even see the flashlight.

Oh sh^$, there's math questions!?
Yeah. We're going to change the 'try to stop the spammers' question from "What is the nickname for Caterpillar?", to "Does 10 + 5 equal 14?", and the answer has to be "If you're watching an eclipse, sure!"
 

Welder Dave

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Shade 12 will be fine. Think of running a gouging torch at 500 or 600 amps and your eyes are only a foot away from a 10,000 deg.+ arc. Shade 14 is just the darkest shade made so it's easy to specify it. They can be hard to find though. Adding another shade to it might help slightly but I think the darkest shade would take priority.
 
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