If you have a PM-45-CNC then this should work without modification. No guarantees and understand that I am not very experienced with this so use at your own risk Have fun. I had to change the extention from .nc to .txt for the forum software to allow me to attach them. There are two programs. Operation #1 for the bottom of the Lego block and Operation #2 for the top. Setup instructions are contained in the Operation #1 file.