Yeah I did see those touch screen kits but I'd have to buy an LCD as well and then it wouldn't be any cheaper than buying a purpose built touch screen monitor. Also, I don't want anything bigger than 12" (She said with a smile...) as it'll look a bit out of place hanging off the side of my little mill.

Is it possible to use a Tablet as the machine controller instead of a PC? I imagine there would be some latency issues?