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TIG welding

by Gary Carroll
(KC MO)

I have been TIG welding in the aerospace field for 23 years. I have always practiced holding the torch no more than 10 degrees back hand. With this walking the cup method is there a chance of sucking air into the weld? Do you use a gas lens for this method? Thanks for the web site. Sure is nice to know there is a resource for information. I try to keep up on all the latest and greatest advancements in our trade.
Thanks


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Walking the cup is mostly useful for pipe welding.

It can be used sometimes on other stuff, but pipe welding is where it really works well.

Yes there is a chance of sucking air, but since the cup rests on the metal...usually inside a pipe beveled joint, sucking air is usually not any more an issue than it is anywhere else.

You can use a gas lens , but having several size cups is important and gas lens cups dont seem to come in many different sizes.

I walked the cup for years as a pipe welder before I ever saw a gas lens setup.

thanks for the post,

jody

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