I am totally uninformed when it comes to CNC but hope this is a simple question. I have a small CNC machine that uses G-Code. I bought it specifically to score parting lines on stained glass. These are the line that you snap or break the excess material away for a project. I have a family friend that understands the coding but can't help with this problem. The cutting head is a roller wheel like you would find on a glass cutter. It's my belief that the rolling wheel will have to be turned to follow the curved lines of our project. There in lies the problem. The machine is fitted with a special head that will accomdate this action. I just need to know how to tell it to turn as it follows the design. Do I have you totally confused? I hope not. I recently saw some diamond tipped etchers but I don't know if they would work for scoring glass. An help will be greatly appreciated. Chuck