[Raffus]

What causes this
Everlast 210 ext.
setup
130 amps
Ac balance 30
Ac frequency (hz) 120
30 scfh argon

[Coldman]

Looks like a shielding issue to me. Its happening at about the same time in the run so maybe something is heating up and loosening up allowing argon loss or air in. Just go through your whole argon line from cylinder to arc and you will find it.

[Oscar]

I agree. If all is well, then you suddenly get pepper "sprinkled" into the bead, oxygen is making its way onto the puddle, somehow.

[Otto Nobedder]

Torch angle.

If you're planting your wrist in one spot to weld all that, and changing your torch angle so you don't have to move your hand to finish, you're likely getting too steep an angle at the end, and drawing air into the weld with your gas flow.

Just one of many possibilities.

Steve S

[angus]

gas is high unless he's using a large cup. hardly any discernible haz on the left. hard to make out the right.

were those two spots with the craters, starts? did you get a new rod at that point.

what size nozzle?

what was the piece sitting on?

[Raffus]

Using a 9 stubby with gas lens. I am new to aluminum but I've made a ton of successful beads pretty much all positions except 6g and over head. I was trying to fix a small part and now I got a lot more work on my hands. Just ran those quick for a picture. Thanks I'll check gas lines ect. In the am.

[angus]

wp9 torch, why? maybe you smoked it. i'm almost willing to bet you cooked that thing.
get a 17 at least.
your gas is too high.
it doesn't look like you have run a lot of aluminum. no offense.

[weldin mike 27]

As someone said once, when the inside of a torch starts melting, it off gasses into the shielding gas, causing the proverbial s#$& storm.

['Stang]

What causes this
Everlast 210 ext.
setup
130 amps
Ac balance 30
Ac frequency (hz) 120
30 scfh argon

Gas flow! At the start of the welds-you didn't have enough pre-flow. Don't know what welder you are using-but you need to set your pre-flow up. Also turn your gas flow down. Too much gas is as bad as too little gas. You are creating turbulance at 30 cfh.

[Raffus]

9 cup. 17 torch

[Raffus]

Found it. O ring on back cap was split.

[Bill Beauregard]

There are many adages that don't always ring true. Two that will always ring true; oil will leak, TIG torches will leak.

[TRACKRANGER]

There are many adages that don't always ring true. Two that will always ring true; oil will leak, TIG torches will leak.

Ha Ha, well put, Bill!
(And they do!)