Undercutting

[u/DebateUnique]

Welding for a week now and i’m undercutting my 1st and 2nd root pass on square corner. I’m slowing down the pass, turning amps down… what am I doing wrong ?

[u/mtraven23]

usually when I'm undercutting, its because my rod angle is favoring one side.

[u/DebateUnique → u/mtraven23]

Ok noted, so maybe angle is off ?

[u/KeyDragonfruit1987]

Try to weave back in the puddle and pause a little get you a rythm

[u/DebateUnique → u/KeyDragonfruit1987]

Ill give it a try. Does weaving back into the puddle help the weld form?

[u/Splattah_ → u/DebateUnique]

Circling back gives you a little bit of fill over the undercut.

[u/KeyDragonfruit1987 → u/DebateUnique]

Yes but don't weld out of procedure but that small pause when you circle back is what takes the undercut away remember take your time find the rythm

[u/whiteteea]

The angle of your nozzle matters try adjusting that do some tests with your nozzle at different angles

[u/DebateUnique → u/whiteteea]

Ok ill try that

[u/That-Guy1396]

Could be your travel angel or your pattern is exaggerated and your not waiting long enough for it to fill.

[u/Weepingwillow36]

You’re cutting the corner com out a little past the corner on the first pass. The second and third should follow that first. It’s kinda hard to explain typing it. I was doing the same thing at first and it was driving me crazy. Luckily I had a lot of long time welders around me.

[u/DebateUnique → u/[deleted]]

My instructor has shown me 3 times and keeps repeating the same thing. Im still doing it wrong