Aluminum is also interesting with filler rod since it requires so much more and vs. steel it'll suck up as much as you'll give it. I've found with aluminum you can feed to your hearts content with rod, it's just not a good thing. Finding that balance involves watching the bead profile but even then you might be fooled because if your backside doesn't have a backing, then it'll horror movie style drip on the backside. Kinda like Frighteners or Nightmare on Elm Street. It's a false thirst that you have to learn to manage.
I've found that whether I like it or not I'm sticking with the 120A on aluminum, I just have to really learn the balance and control of the puddle more. If I do it right I can still get a shiny bead now, but yeah, aluminum is like that "expert" level in a game. Brutal on the ego but well worth it!
Things are definitely clicking and the most important lesson I've learned now is patience, patience, patience. TIG is art so take your time. Suck it up and deal with the cost of the gas lost (which isn't that bad).
As for a 300 degree boiler with 140 degree ambient.... UGH. I'd survive but would hate my day. I've done plenty of 120+ days and plenty of outside work on those days which isn't too bad as long as it's a dry heat. Any humidity and I'm hatin my life.
I finally decided to see what an arc feels like on bare skin! So far I got about 10 minutes under the hood with no shirt. I'm not hating life yet but I think I'm starting to feel some burn. We'll see but bein in AZ, I've got some tough skin. I know horrible idea, but like everything else in TIG, I just had to know
![Very Happy :D](./images/smilies/icon_e_biggrin.gif)
![Wink ;)](./images/smilies/icon_e_wink.gif)
As for Michigan! I did live there for a year and won't ever go back
![Smile :)](./images/smilies/icon_e_smile.gif)
![Wink ;)](./images/smilies/icon_e_wink.gif)