Build computer controlled manufacturing tools from commonly available materials.
While I still haven't done all of the coding to make my software process gcode, there is a huge improvement on the construction side of my CNC v3.2 project:
[Unrud] has rewritten the source of my openSCAD model to give it a better readability. Furthermore the drill holes are now included as well. Finally he has written a Python script that extracts the length of the bars and the scheme for all the drill holes from the openSCAD file. Fantastic work, thanks a lot!
With those tool it will be more easy to change the dimensions of the machine to meet your requirements.