....... I'm just curious why you contradict yourself by stating you hate inverters, yet seem not to have a problem with the 210, which is a partial inverter machine.

.........
Which, really technically isn't correct when speaking of the Syncro 210.
Well, you're right.....I looked at the specific 210, and Miller has introduced an inverter into the SyncroWave line.
I have welded with the Sync 180, 200, 280, 300, 350, 351, and another that I cant recall the "number." It was a 480Volt, 3 phase.
I assumed that the Syncrowave 210, was a Re-named Syncrowave 200 with a new control knob and sticker. (typical marketing idiot improvements), but I was wrong.....
I have also welded with all of the Dynasty models of a particular year and introduction. 200, 210, 300, 350, and maybe a 400...??
I contradicted myself, because
Miller inverters were named Dynasty and
Syncrowaves WERE transformers.
So let me rephrase some of my earlier text......
I LOVE TRANSFORMER MACHINES!!!....
I HATE INVERTERS!!!
.
.
.
To the OP.....
Find yourself a 500 pound Transformer Machine, and hide out in the corner of the shop....
Do some dirty science....
.
.
.