Tig weld rack and pinion to cnc plasma frame?

[JAZZCNC]

USB could be problem.? It's flakey and not very good with noise. If you can afford it then I would look at controller with Ethernet.

Cslabs Ip-m is excellent industrial strength controller with 24V I/O which is very noise immune. It can also be used for THC.
It does allow slaved motors with one slight draw back that it only homes to one switch for slaved axis but for Plasma machine this isn't really big deal.

I fit these all the time and tell you 100% confidence nothing comes close to it for reliabilty and noise immunity. It's the Only controller I've used that will allow me to weld with TIG next to machine and not stop it.! . . . . I've used most controllers and none have been able to handle Tig at close range or on same Ring.