My version of misans brilliant design. It can use a full A3 size all the rod ends are clamped and I have added x and y minimum endstops and strengthened the pen holder and added a return spring to the pen carriage.I have updated grbl to 0.9j and it is pre configured. If I have forgotten any parts off the list please let me know.

8 x LM8UU

10 x F623ZZ

2X 624 BEARINGS

4 X 8MM X 500MM SMOOTH RODS

2X 4MM X 100 SMOOTH ROD

2 X M8 X 470MM THREADED ROD

8 X M8 NUTS

8X 8MM WASHERS

25X M3 CAP HEAD BOLTS

25X M3 NUTS

9X M3 NYLON LOCK NUTS

10X M3 WASHERS

4X 3MM WOOD SCREWS

1X SG90 SERVO

1X 40MM LONG SPRING (5MM ID)

1X ARDUINO UNO

1X CNC SHIELD

2X NEMA 17 STEPPER MOTORS

2X KW11-3Z MICROSWITCHES

2X GT2 20 TOOTH PULLEYS

2.5 METERS GT2 BELT

1X 3 AMP 12V PSU

Software:

Inkscape https://inkscape.org/en/release/0.91/platforms/ universal gcode sender http://bit.ly/1DkClRW Inkscape gcode extension https://github.com/misan/laser-gcode-exporter-inkscape-plugin