The first cnc was more of a copying machine as you have to scan the board first and then the co ordinates would be used to cut the foam.
Second was made out of wood purely to test the design, as it was easy to chop and change.
and onto this one. My plan was simple make a machine that would be light, could be broken down and reassembled quickly and will cut up to 105cm wide by 420cm in the length and works with most design software.