Time for a little science lesson first.
Just about time to weld!
Where's his potato?
Where are his safety socks?
That shield works great. I couldn't see a thing.
If you can see the video afterwards, it did its job!
I missed the name of the CRC cleaner?
Also - JG lasted longer than I expected before touching the hot metal with an ungloved hand.
In reply to mikeatrpi :
I was using the QD Electronics cleaner. It's actually one of my favorite CRC products because it's fairly mild and has very quick and complete evaporation.
Dr. Hess said:Where are his safety socks?
You mean safety Crocs? 
I learned some from JG's dog and pony show last night. I use a HF MIG with straight Argon and no spool gun. Aluminum feeds all the way through for me.
Dr. Hess said:I learned some from JG's dog and pony show last night. I use a HF MIG with straight Argon and no spool gun. Aluminum feeds all the way through for me.
Not impossible, especially if it's one of the machines with a fairly short lead. Trying to get aluminum wire to consistently feed through a 6+ foot lead is definitely a your-mileage-may-vary situation, though. Sounds like you;re one of the lucky ones.
Oh, I've had a bird cage or two, and I don't do aluminum very often, but I've managed to get it to work. I also have replaced the liner with a piece of teflon tubing, which probably helps. The lead is 6' long. Last time I did aluminum, it would weld but then when I stopped, it would ball up and stick to the tip. From your show, I think I needed more "stick out." I was kinda doing it more like I do stainless or carbon steel, but with faster feed. I also probably needed even faster feed and to move the nozzle really fast, like you did last night. And better cleaning. And short pants.
Yeah, getting used to the huge stick out was tricky for me. Basically double what you do for steel and adjust from there.
And, yes, the Australian Army look helps a lot.
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