You can also use a uniphase 2114-40mla power supply. Just gotta wire up an umbilical. Really, any small air-cooled argon power supply will work then you just need to make the two cathode connections and an anode connection, and use a starter board from any argon. It seems like a daunting task but it's really not bad at all. I use my 2114 power supply for a ton of different lasers. It's great..