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Old 05-04-2009, 06:20 PM   #1
Dq383500
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Default Anyone try a tig gas lens with pyrex cup

I have seen these on ebay and they look like they could help me with some aluminum welds. I have trouble seeing the weld puddle at times, and thought maybe the clear pyrex cup could help.My question is does the pyrex cup last?@ $50.00 they are kinda pricey,or should i just continue to work on my techneque, I can use all the help i can get!
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Old 05-06-2009, 03:59 PM   #2
rockwithjason
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Default Re: Anyone try a tig gas lens with pyrex cup

i don't know how they hold up but i have watched several videos featuring see thru cups and they look pretty sweet. being that its pyrex its hard to imagine that they would melt or scar.
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Old 05-06-2009, 08:42 PM   #3
Defender Chassis
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Default Re: Anyone try a tig gas lens with pyrex cup

I personally have never used a pyrex cup but don't see the benefit. However, my current torch is set up with a gas lense. It allows me to pull the tungsten out a lot farther from the cup. It seems logical to me because you get better visibilty of the puddle without any obstruction. I think if you tried one you would like it.
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Old 05-06-2009, 09:28 PM   #4
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Default Re: Anyone try a tig gas lens with pyrex cup

Thanks rock and defender,yea I guess being pyrex it should hold up.I picked up a regular gas lens and sure notice a difference. I did pull the tungsten further out, and can see much better.Thanx, if that doesn't work for me i'm going for the clear pyrex to stay in the gas shield.dang breezes
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Old 05-06-2009, 09:55 PM   #5
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Default Re: Anyone try a tig gas lens with pyrex cup

It sounds like a solution to a problem that doesn't exist. Forget about the gadgets, and practice practice practice. The best way to improve your welding is to run more beads.
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Old 05-06-2009, 09:58 PM   #6
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Default Re: Anyone try a tig gas lens with pyrex cup

The cup is very handy for sensitive metals like Titanium. If your shield gas goes away the metal gets contaminated by oxygen and nitrogen which is very bad. Titanium at it's melting point is very different than at its solidus. A contaminated bead won't have anywhere near the strength.

Not that you plan on welding titanium anytime soon. Just saying.
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Old 05-06-2009, 10:17 PM   #7
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Default Re: Anyone try a tig gas lens with pyrex cup

I think it would only be a benifit to most of us if you are having to use one of the larger cups. for the small cut I dont have any trouble seeing

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Old 05-07-2009, 10:29 AM   #8
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Default Re: Anyone try a tig gas lens with pyrex cup

Bob, I have used the pyrex cups before. I think the benefit I got from using them was really from the gas diffuser inside. The fact that the cup was clear was no help to me whatsoever. You may think that you will be able to see through the cup to visualize your weld, but you really can't, or at least I couldn't. Like I said though, I had a gas diffuser inside the pyrex cup that really seemed to aid in the gas coverage of the weld. As far as how durable the pyrex cups are? My only suggestion is to not drop them. They seem to be very brittle, and break easily. Aside from that, I wouldn't worry about damaging them from heat or anything else.
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Old 05-09-2009, 07:57 AM   #9
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Default Re: Anyone try a tig gas lens with pyrex cup

I have used them at work, the only benefit I have found is when welding around a corner.
You can't see through them like you can through a piece of glass, but once you get used to them they really do help in certain situations.
But the price really doesn't justify using them all the time, 98% of the time I use my standard cups.
I work in AreoSpace and they tend to be a little more fussy about their welds.
George.
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Old 05-12-2009, 11:10 PM   #10
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Default Re: Anyone try a tig gas lens with pyrex cup

I second the suggestion of the gas lens. One thing I'd add is a cheater lens in your helmet. I have a couple different power magnification lenses that drop inside my optrel satellite helmet. Making things 4x bigger helps a bunch as well.
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Old 05-14-2009, 10:16 AM   #11
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Default Re: Anyone try a tig gas lens with pyrex cup

Quote:
Originally Posted by MNDucatiMan View Post
I second the suggestion of the gas lens. One thing I'd add is a cheater lens in your helmet. I have a couple different power magnification lenses that drop inside my optrel satellite helmet. Making things 4x bigger helps a bunch as well.
Cheater Lens! Now your telling your age!
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Old 05-14-2009, 04:22 PM   #12
Sroufe7
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Default Re: Anyone try a tig gas lens with pyrex cup

I used to have one until my roommate drop the torch on the floor and broke it....

IDK if it helps out or not, but I bought it with a kit and had a bunch of gas lenses with it.
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