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Full disclosure: I know very little about TIG welding. I’m okay with a MIG rig, and I can stick weld well enough to hook things together, but I’ve never handled a TIG torch. So when I received a press release from Weldcraft indicating that they’d expanded their gas lens line a bit, I had to hit the ‘net to discover that a gas lens is simply a fitting that re-directs the gas normally emitted from the torch, focusing it to provide more even coverage and flow for a given welding situation.

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It makes sense to me, then, why Weldcraft would be proud of offering a relatively wide range of lenses in standard size, large diameter, and stubby to fit just about all their air and water-cooled TIG torches.

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Gas Lenses Improve TIG Welding Performance [Weldcraft]

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3 Responses to Weldcraft’s Gas Lens Series

  1. Jennifer Simpson says:

    The gas lens has been around for a long time, and we always recommend a gas lens set up. In fact we have a PRO series torch that includes the gas lens. With TIG welding, especially if you’re welding a more sensitive metal like titanium the benefit of the gas lens is that the gas flow is not as turbulent, and so it does not draw in oxygen which can contaminate your weld.

    Its a little more than just a fitting, not shown in your photo, there are a series of screens inside the gas lens collet body. Check out this article for more information:
    http://www.thefabricator.com/arcwelding/ArcWelding_Article.cfm?ID=1446

    and you should try TIG welding! no big sparks, but instead you’ll get some sweet looking welds!

  2. Cameron Watt says:

    With a gas lens you can run more electrode stick-out to get into tight spots; like doing a weld in a crowded pipe rack.

    As for turbulence letting the atmosphere at your weld puddle, if it’s an issue with the torch, then it’s usually either excesive shielding gas flow or a dirty cup. I’ve only found myself wanting a gas lens a couple times in my work life, but I’m not a boiler maker. 🙂

  3. lens42 says:

    A gas lens works sort of like the little screen in your kitchen faucet. The gas comes out in a more straight and even flow. As a rookie TIG welder, a gas lens has helped me learn by allowing the electrode to stick out a bit further from the torch, and let me see the puddle a bit better.

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