I just got my 2013 250EX . I had a Miller syncrowave 250 which I loved but in my work weld a lot of thin stainless and have been having trouble with excess heat/distortion so bought the 250EX mainly for the pulser. I didn't much like the supplied handpiece and wanted to use my ESAB HW-20 handpiece as I have lots of gas lens, etc. from .040" to .125". I didn't want to shell out three hundred bucks like this guy :

http://www.everlastgenerators.com/fo...tos-and-Part-s

So I made my own adapter to use what I had. I robbed the switch out of the supplied handpiece and zip tied it to the HW-20. I have a Barnard water cooler so used it as well. The 250 EX seems to work great (after I set the point gap from about .075" to .032").Click image for larger version.  Name: tig1.jpg  Views: 324  Size: 90.7 KB  ID: 9805Click image for larger version.  Name: tig2.jpg  Views: 310  Size: 87.8 KB  ID: 9806Click image for larger version.  Name: tig3.jpg  Views: 308  Size: 92.3 KB  ID: 9807