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TIG guys......feeding the filler technique?

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  • #16
    Advancing the Filler

    Hey,

    The instructor at the shop where I plan on taking a few TIG lessons reinforces what you all are saying.... feeding the rod is one of the techniques that is tough to perfect. He suggested practicing with a pencil, too.

    I began practicing with a piece of coat hanger wire. It's probably a little bigger around than most filler wire; but, working my fingers around a smaller rod shouldn't be too much different (hopefully).

    Before I totally screw up my technique, I was wondering if anyone could comment on the two techniques presented on WeldingTipsandTricks. The itsy-bitsy spider technique he demonstrates seems to be the most comfortable for me when you practicing on the couch. I use my thumb and three fingers to move the rod along (without a glove). Using a rolling motion it seems like advancing the rod is fairly smooth. How much stick-out is generally good?

    Any thoughts about these two techniques would be appreciated. (Any other suggestions would be great, too.)

    (I'll post on a separate thread regarding gloves.)

    Thanks for your help.

    Jeff

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    • #17
      Hi,

      I advance the filler by laying it across the grove between my thumb and index finger, then use my index finger and middle (next) finger to advance my rod.
      Advancing the filler this way works for me. This works very well if you want to stack dimes as the time between addition of filler gives time to advance the rod.
      On bigger welds I feed a good bit of rod into the [pool then move ahead with the torch and repeat. This leaves a larger distance between the beads but looks good, especially if everything is set up well, it gives a nice pattern with a shiny section then a frosted section and so on.

      One thing not talked about is the way filler is added to the pool.

      I have been told that forcing the filler until it feels resistance is good for penetration; however I have read that it is important to add filler slowly not to disrupt or cool the molten pool.
      Any feed back on this?

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      • #18
        Hi,

        Advancing the filler rod through your hand is one thing to master and we have seen some good ideas on this.

        What do members have to say about the best way to introduce filler into the molten pool; not how to advance the rod but rather how it should be introduced to the pool.

        I was told by an experienced welder that it is good to push the rod into the pool until some resistance is felt and that this would give better penetration.
        On the other hand I have read that is best to introduce the filler in a manner that doesn't disrupt or cool the pool.

        Looking for different ideas on the subject.

        Thanks

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        • #19
          I took a piece of tig wire, and put a loop on one end about the size of a quarter. Hooked up an electrical meter and set it to continuity. One lead to the tig wire with the loop, the second lead to the filler wire in my hand. Every time I hit the loop, the meter would beep. Something to mess around with while watching TV.

          Now, if someone builds these I get a cut....

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          • #20
            Originally posted by Wen Valley View Post
            I took a piece of tig wire, and put a loop on one end about the size of a quarter. Hooked up an electrical meter and set it to continuity. One lead to the tig wire with the loop, the second lead to the filler wire in my hand. Every time I hit the loop, the meter would beep. Something to mess around with while watching TV.

            Now, if someone builds these I get a cut....
            Thomas Edison and Tesla would be jealous!
            Dynasty 280DX
            Bobcat 250
            MM252
            Spool gun
            Twentieth Century 295
            Twentieth Century 295 AC
            Marquette spot welder
            Smith torches

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            • #21
              Personally I don't have all that much use for that fancy finger work for trying to advance the filler rod. Not saying I don't ever use some of it in certain situations but 90+% of the time what I do is back off the foot pedal slightly and let the rod freeze to the puddle and then slide my hand back and re-grip it. then back down on the pedal and on ward with the welding progression.

              One thing to remember is that ever time you take the hot end of the filler rod to far a way from the puddle and get it out side the gas shielding envelope it oxidizes. Then when you stick it back in the puddle you've added that oxide to your weld. Not a real big deal on carbon steel usually but it's not something you want to get in the habit of doing on a lot of other things.

              As far as technique for how the filler rod gets added to the puddle, where ever I can get a way with doing so I like to get the filler rod hooked to the leading edge of the puddle and keep it hooked up there with out doing the intermittent daubing thing. You have to keep a steady pressure feeding the filler rod to the puddle and that's controlled by how fast you can move down the joint and how hot you can run.
              Will Argue for Beer (any issue, either side)

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              • #22
                Probably not safe, but I don't wear a glove on my filler rod hand and hold like a pencil...

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                • #23
                  Originally posted by JWDESIGNS View Post
                  Probably not safe, but I don't wear a glove on my filler rod hand and hold like a pencil...
                  What sounds unsafe to me is your not wearing both of your hand panties at all times while TIG welding.
                  Will Argue for Beer (any issue, either side)

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