Newb Welder - Need Little Help

upmm019 · Posted: Sun Feb 08 15 4:59 am Post subject: Newb Welder - Need Little Help

So its been a very longtime since I welded.

I just got a Lincoln SP-140T Mig Welder.

I am trying to weld some 1/8" angle stock and need to understand the correct set up on this machine.

I am using Gas so what should my gas be set too?

I am trying 3.5/D but I am getting lots of crackling/popping.
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ecave · Newbie Joined: 20 Sep 2013 Posts: 38 Location: Benson, NC

You may have to speed your wire up just a bit. I will run it about 4.
If you are not in the wind, you can get by with about 15cfh but I would run any lower than that.
Can you post a pic of your weld?

Smokin Mike · Posted: Sun Feb 08 15 6:21 am Post subject:

Not having a good ground can cause it to crack and pop also. Make sure your grounding surface and where you're welding is clean.
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whall · Posted: Sun Feb 08 15 9:47 am Post subject:

Check the polarity, it could be set-up to run flux core. That would cause a lot of crackling/popping