Kinda don't know where to start with CNC I have. Its a Charly2u CNC that was made for AutoTemp software that pretty much only has set features. I used it for make moulder knives on grinder...almost like key cutting. I would like to use a better software to cut other things adding more toolpaths. My question is where should I start to convert this over. The cable is a Small RS232 cable I think with only 4 Pins used on machine side.

Appreciate any help.