Add a toggle, probably to character editor, so you can either repair until fully repaired, or repair one part of a cade’s damage.
Lots of times I want to repair three separate cades, and it can be quite difficult to get the windup to stop on the cade I’m currently repairing and I can’t start repairing the other cades- you would want to do this because you don’t want any one cade to fall below the threshold where repair is possible.
IIRC if you just close the blowtorch it SHOULD cancel the repair action, also remember, nailguns can repair cades if they are too damaged to weld.
I believe that closing the torch will still repair. I believe you have to actually close and put up the torch. Regardless, none of these immediately cancels the repair- if you move for example to cancel the windup, it still takes a second to cancel.
In this kind of situation, every second & click counts. Repair uses up metal, which you may have welding fuel but no metal left. Or, you have metal but no plasteel and vice versa. No matter what, having it constantly repair eats up precious time you could use to start a repair that means the difference between a breach or unrepairable cade that will need to be replaced.