I love the entire concept of this. And I want to make this machine to build custom parts for other projects....however. I think a big problem for me, is I want to be able to CNC metal, rather than wood and acrylics.
So, now I think this drives an issue which I'm not sure what a better solution would be. To simply slow down all of the motors driving the machine and raise the torque to compensate for it's lack of ease to grind/cut through the material, Or do I replace everything with much more powerful motors. (and thus most of the other parts to handle the new torque)
Aswell, I was considering replacing the dremel with a pneumatic die grinder or some other similar tool. Does emc2 control the rev of the dremel? or do you guys just have it set to max revs on the tool itself?