Lincoln Precision TIG 225 One-Pak
(there is a duplicate of this page on the Flaming Lotus Girls wiki)
Purchased by Lee Sonko for SWARM and The Box Shop 6-1-07 from http://WeldingSupply.com for $1900.
Model: K2535-2 Precision TIG 225 Ready-Pak w/Cart 208/230/1/60
A suitable replacement nozzle for the PTA-17 torch that came with it might be: Alumina nozzle, Lincoln Part # kp2016-4b1, industry part # 10n48. 3/8", #6, 10mm, it is 1-27/32" long. Weldingsupply.com part # 105Z44
Alumina cups are less expensive, "however, do not resist thermal shock on higher amperage applications very well and tend to deteriorate or crack and fall off." Perfect for the Box Shop. 
Good filler rod can be had at http://weldingsupply.com. It's $4/lb instead of Praxair and Airgas' $25/lb! Consider getting part # ED031109, ER5356 Lincoln Aluminum 3/32" x 36" 10lbs.