Welding Tips and Tricks

i have a miller syncrowave 200 and i was wondering what tungsten would i use to weld 1/16 thick aluminum piping. Ive read a couple articles that state use pure tungsten for transformer based machines and use lanthanted and thoriated for inverter based. Seems like everyone has different results. I read that jody says to use lanthanated that its pretty much the same as long as the tungsten is rounded at the tip. I currently have 3/32 1.5% lanthanated tunsten with a 3/32 gas lens. would this do the job? or should i just use 1/16 pure tungsten with a 1/16 gas lens to do butt welds? which tungsten is better for my welder and would give me the cleanest welds? thx

If your base metal thickness is 1/16", then you should use a 1/16" electrode at about 60-90 amps and about 15 cfh gas and a 1/16" filler rod and either a 5/16" or 3/8" cup. As for whether to use pure or lanthanated, try both on a piece of scrap and see which works best for you. I, myself would use the lan. Hope this helps.

ya ill do that, so just round the end on the lanth right? cant use a point since i have a transformer machine correct?

Yes. With the transformers, a point won't stay very long on AC. Go with the Lanth. and ground to a short taper and a flat tip and run a bead on some scrap to ball the end. It won't ball like pure will, but it will ball.