Firstly, I would like to mention a little bit about the project background then I will list my questions. Any help is appreciated Background: I am an undergraduate mechanical eng. student and I have a project that requires me to build a CNC milling machine with an automatic tool changer. The axes ranges are both 1 meter in x and y directions, and it will be used to machine polymers. I am planniby egecant - CNC Routers, Mills, and Hybrid RepRapping