Hello it is possible to conect This steepmotor to the smoothiboard and configure Them to 1.8A and not the 2.1A
Sure simply set the current to 1.8 in the configuration file.
Can you please tell me if that nemamotors is good to work in a Proxxon mf70 mill. What software do you recomend to control the mill.
Whether the motors are appropriate depends on what kind of materials ( wood, plastics, metals, etc ) you are going to be machining, and at what kind of speeds you are going to do so.
About software, I recommend using CamBam for G-code generation ( you can also look at Pycam and Heekscad ), and I recommend Pronterface or Octoprint, or Smoothie's web interface, to actually execute the G-code files.