When I say gun trigger, I just mean in how it actuates. No spring or tension to pull against. Matter of fact, a ring that your finger goes into and can pull and push would be more desirable. That way you can increase or decrease amps. Your switch build is awesome, wish I had access to some of those tools. Would make what I want to do very doable. With the 185 though, you need a switch inside the housing just in front of the slider that will actuate the unit and gas solenoid right before the amps start and then keep them actuated until you slide it back down to the "off" position.

CK's says that Everlast keeps changing their POT's so they are having a hard time committing money to something that may be changed in a few months. From my readings there have been 3 or 4 different ohm pots so far in their Tig welders.

Want to build another finger control?
Glenn