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First lets get something clarified. A ball is used with aluminum and a pointed tungsten is used for ferrous.Is reidy doing aluminum or ferrous? AS for yoshi and the higher amps I'm not saying it can't be done ,I said it was a lot of amps and the way he was describing things it seemed as if he was confused as to what he was actually saying. With mild he is likely fine but with moly he's asking for a brittle weld at those amps. At least that's what an old time aircraft welder taught me. Anyway if it works ,it's correct. THe fitup is critical ,of course no matter what material is used.
I weld alum with a pointed tip...well it starts out pointed. It don't take long to form a ball all by it's self when your welding. I stated earlier that I use red for everything. I think I need to change that. Last night or this morning however you want to look at it, I changed back to green for alum. Puddle flowed a little better. I think I switched to red for alum when I was doing thicker stuff awhile back, the pure tungsten kept getting to hot and unstable.
So according to your chart I should switch to 1 1/2% lanthanated so I can be lazy and not change tungstens? I'd be willing to try it, but I have a full box of pure tungsten, and a full box of Thoriated and I don't think I'll have them used up any time soon. Plus, I kinda like to glow in the dark. I don't have to carry a flashlight.