I have not used there products but there kits should be applicable to a mill or lathe just get the right sized kit. as far as threading you just need to hook up a speed sensor to the spindle of the mill or lathe one pulse per rev is fine.
a cnc system is a power supply breakout board motor controllers motors a computer and software. It is just a matter of adapting the motors to the machine and setting up the software.
I am just finishing up a mill project based on a gecko 540 this is a semi plug and play mother /breakout board with plug in controllers just hook up a PS and plug the motors in then load the XLm file into Mach 3. Keiling engineering has package setups based on the 540 the G 540 is made in USA take a look just a satisfied customer.
My build blog here
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