As you can see there are several challenges to overcome.
Controller: I guess I need to get some sort of controller for this stepper so that I can connect it to a parallel pin on the controller computer.
Heater: What to get for the heater in the extruder? Does that get controlled by a controller or is there a manual setting on a typical cupcake machine? Do I need to know the temperature? Do I need something to display that?
Software: I’ve been using Sketchup and a few other tools to run the CNC mill. How to control the extruder? Is this the A axis? What does this mean when generating the g-code? What is the required chain of programs to get this done?
I'm just starting to read this forum so forgive me if there is a known solution for easily getting an extruder onto an EMC2 or Mach III mill.