Hey guys, I'm using a miller sd180 for aluminum with pure (green) balled tungsten. Is there an alternative tungsten to use to avoid the unstable arc when I'm starting my puddle? Its kind of a pain in the *** when welding AN bungs with delicate threads.

Thanks!

 

I usually put the other side of the fitting on an AN bung or any other aluminium bung when welding it and just kick down the pedal like normal.

 

Try zirconiated sharpened to a 45 degree point

 

what size zirconiated would you recommend?

 

3/32

 

You can also try the arc zone hybrid tungsten. Seems to work pretty good on my sinc 250. I still have a bit of arc wander because it is only a 60hz machine.

 

I use 2% thoriated for everything and don't have wandering problems on my machine, though like I said I still put the other side of the fitting on just in case it wants to melt.

edit: I had one of those hybrid tungstens, didn't seem to be as good as the thoriated. I think I still have like 3/4 of it left sitting in the drawer.