Pulsing the pedal? Is this wrong to do?

I have found that for me personally it helps a lot in keeping my rhythm to pulse the amperage up feed rod, let off to almost nothing move over an 1/8" ramp the pedal up and feed rod and repeat this throughout my bead to give that roll of dimes look. I do this with 4130, mild steel, stainless, aluminum pretty much everything i tig. Some of the old timers tell me this is completely wrong and doing that i would never be able to pass a cert test. is this true? is what im doing wrong? i have seen other people at fab shops i worked at before do this and i always thought it was ok. I mean they have tig welders that pulse modulate amperage for you so why cant i do that with my foot? Looking forward to your thoughts on this. Thanks in advance.



it aint wrong, just different.

one thing to consider is that on some alloys, like aluminum , a crater crack can form as you let off the pedal. Then you remelt it and cover it up with the next ripple.

This seems to be a popular technique with automotive and motorsports folks.

it is very similar to pulsing at about 1 pulse per second.

I will also say, that for a lot of weld jobs, all that pedal pulsing is just not necessary. but if it works for you, and your welds meet the specs in your industry, who am i to criticize?

Return to tig forum.

Enjoy this page? Please pay it forward. Here's how...

Would you prefer to share this page with others by linking to it?

  1. Click on the HTML link code below.
  2. Copy and paste it, adding a note of your own, into your blog, a Web page, forums, a blog comment, your Facebook account, or anywhere that someone would find this page valuable.