I think you are going in the right direction! I like that you are using the full arc voltage instead of the divided arc voltage. I'm sure there is a very good reason why one would use divided arc voltage for THC. Using the full arc voltage will allow anyone with any plasma cutter to use your THC. I also like that you are developing the OK to move as well. My setup does not use the OK to move, and I know other people have had to jump the OK to move pins to work. This could potentially open up the cnc plasma market for all plasma cutters to have a THC ability.