TIG Welding a Carbon Steel Tee Joint MultiPass Fillet Weld

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I got a comment from a student a few weeks ago who was having trouble with a multi pass, fillet TIG weld at his welding school.
The conversation went like this.
“Hey Jody. Any chance of doing a 2F 6-bead to joint on 1/4 steel with TIG? Kinda having trouble with that in school for some reason. Doing the lay wire technique and this joint just will not come out like it is supposed to. The root goes in fine, but subsequent passes are harder to get in for some reason”
ME
“I will put it on my list but you will probably be done before I could get it shot lol. But let me ask some details anyway...Is it a tee joint? stringers or weave? and are you required to do lay wire? Any particular size wire? If root goes in good, but subsequent passes go bad , it could be surface oxidation so a gas lens might help along with letting it cool between passes along with wire brushing every pass.”
@connormarek1028
“Hi Jody. No worries. I`m sure it will take time to get videos out. I can answer your questions though.
1) 2F T-joint on 1/4 carbon steel plate.
2) stringers (but slight weave) and I`m required to do lay wire for some reason. Walking the cup is not allowed at all BTW. My instructor wants 6 beads.
3) 1/8 ER70S-6 filler rod. I`m welding @ 140amps on a Lincoln Aspect using Hi-freq start W/ a foot pedal. We also use gas lenses on our torches with #6 cups at ~30CFH. Maybe some surface oxidation, but only the "pretty colors" ;). “
I am not sure why his instructor required lay wire technique, 140 amps, and a #6 cup at 30cfh but I would guess its because that would be fairly common for socket welds on 2 inch pipe.
30 cfh seemed a bit high even for a #6 gas lens cup…but maybe not if there is a slight breeze or draft.
I chose a #7 stubby gas lens and went a bit hotter while still using laywire and 1/8” ER70S6 wire.
That brings me to this special deal I have going on.
I found a bunch of standard stubby kits in my storage unit and while supplies last, you can get a free one when you order certain other kits.
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[@connormarek1028]

Thanks so much, Jody. This was an amazing video. I`m a little bit speechless. Yeah, I think my instructor did make us do this so we could make fill/ cap passes on V-grooves and pipe. I had never even heard of this weld until I went to school. We haven't done pipe in the intro to TIG class, but we did V-grooves, and they were quite a bit easier than the 1/4 T-joints. I`m so glad you were able to work this joint in with your other projects. It means a lot, and this video was extremely informative. I could still use some practice on this joint because they never came out the way I wanted in class, but especially now, I think I can perfect it. I finished intro to TIG, but still need practice to be as good as I want. This will still come in handy for sure. I appreciate you doing a video based on my comment. I can't tell you how amazing that was to see. Keep the videos coming ;)

[@olddawgdreaming5715]

Thanks for sharing with us Jody. That was pretty nice what you did in this video to help someone out and a lot of other folks will benefit from it too Stay safe and keep up the great videos. Fred.

[@ericlong3792]

I wouldn’t be the welder I am today without my tig finger. Thanks Jody👍

[@bigb7157]

Thank you for your time and efforts. As an old guy in the business I appreciate you showing others how to do it properly.

[@martinrubenstein7943]

Pony-tail holder! What a great idea. Thanks for another excellent video.

[@shadowrider7072]

Loving the clear and crisp camera shots! Always good material to use as a suppliment for my welding students!

[@john-smith.]

Video quality on this looks great! Thanks for your videos, and your PDF's on your website.

[@chinaskibukowski7747]

Those tig fingers are incredibly helpful. Got one of the large and one of the small. Super durable and cheap! Incredible how much longer you can weld when you have one on.

[@joshawawilliams37]

THANKS ALOT FOR SHARING SOME MORE KNOWLEDGE WITH US.

[@magge636]

On first pass theres a big gap between plates. Helps a lot on penetration.

[@breinbjerg22]

Thank you for another great video, i was thinking about how the different "the welding culture" is from USA to Europe, like you never see a foot petal in europe, and the type of tig torch that is common, also the welding teknik called "arc on arc" where you Are to Guys welding stainless, one on each side, where you follow eachother around, eg. Welding a big tank.

[@ypaulbrown]

Outstanding Jody.....I have learned to love my on/off switch on my Synchrowave 250 and the Dynasty 280DX...

[@wadepatton2433]

Wow Jody, just LOVE those "old fashioned" knobs on the Primeweld machine. As you may have heard they changed them to yellow in color and eliminated the line on the outside diameter of the knob. Also they used WHITE on Yellow such that the indicators are practically invisible on the new knobs.

[@famasmaster2000]

Always an awesome and informative video ! 👍👌

[@patricksalmon3494]

Super vidéo et les commentaires et explications magnifiques.

[@paulculbertson6486]

Can you show how to do aluminum in a 2f position. Using 3/8 tungsten and 1/8 filler. Thanks.

[@grumpycricket]

Dunk your aluminum block occasionally to cool it down.

[@fredericlaurent5761]

That's why i love my job .

[@opxmali]

how do you film the arc

[@ScubaDude68]

Hey Jody, is that a Primeweld fixture table?