Tig Primeweld slider control

I've been playing with handheld tig current controls. This is my third version and I'm pleased with how it works. Uses inexpensive pots and switches and may be worth building for light welding use. It's made of PETG plastic so it can stand 130C I guess but if you're welding for long periods it may become soft. I've had no problems.

Potentiometer is from Sparkfun as is the knob.
https://www.sparkfun.com/products/11620

https://www.sparkfun.com/products/14889
The switch is a 5mm high 6x6 pushbutton switch.

https://www.amazon.com/QTEATAK-Momentary-Tactile-Button-Switch/dp/B07VSNN9S2/ref=sr_1_3?dchild=1&keywords=6mm+push+button+switch&qid=1625175103&sr=8-3

I use this on a Primeweld 225 and the connector is available on ebay.
https://www.ebay.com/itm/221726378880

The switch is only good for about 50ma so if you don't have a Primeweld then measure the current drawn through the pins that start the arc. The Primeweld is only about 10ma.

Low current is when pins 4 and 5