I have a Lincoln SP175+ MIG. The gun that comes on it is crappy. I've had it apart a half a dozen times, fooling with the contactor points in there, which amount to a tiny washer, a spring, and two wires with crimps on the ends.
The gun has some life in it. Rather than just junking it and spending $100 or more for a new one, couldn't I just go get a decent pushbutton and wire it to the outside of the handle in the most comfortable position, and rerouting the wires? It's just a shunt from the relay. When it's welding, it's a joy, but when it goes in 2,5, and 10 second spluts, it's a pain.
I need to get this running, and running like it's supposed to because I have a project to do. $100 would buy some materials, and if I can fix it with a $5 switch, that would be fine with me.
I don't know why Lincoln would put such a piece of crap on one of their welding machines.
Steve