Poor shielding gas or contaminated shielding gas can drastically reduce etched zone band width in much the same way as a poorly set up balance.One thing I see in the ally image is the Cleaning action from the AC does start, you see the light grey splash due to oxide stripping, but then it goes off.
My long shot is it may be an electronic fault. As soon as it gets going on AC it works until a device warms up and then it goes more like DC. Compare with my ally attempt. Does your machine have Auto AC balance?
You dipped the tungsten at the start.you cant do that and expect a nice looking weld
You guys have got better eyes than me.
All I saw was a splutter at the start and a bright green dot.
It did seem rather a long time hanging around before any filler was involved so I’ll second zeps post get more current going in.
If you did stab that tungsten then as bw said you have got no chance of producing a contamination free weld.
Its a definite dip,the black soot around the start of the weld is proof,aswell as that sound.
i would think there is a slight gas issue too.the sip torches can leak inside the handle
That’s good info and something the op should definitely investigate further.the sip torches can leak inside the handle
That’s good info and something the op should definitely investigate further.
A gas leak inside the torch could cause this issue. If it’s been seen before on the sip torches then you should look into this.
This is normal for start up surges on single stage regsAlso the gas rushes at the start and then dies off rapidly but can still be felt coming out
This is normal for start up surges on single stage regs