X-Carve is a 80cm x 80cm 3-axis CNC mill. (And it is awesome.)
Assembly Instructions: http://x-carve-instructions.inventables.com/
A properly tuned and calibrated machine should get to a resolution of ~0.075mm to 0.13mm.
- Arduino/Gshield with USB output
- Universal 24V power supply
- Input voltage: 85-264VAC (toggle between 110 and 220V)
- Spindle (DeWalt 611)
No load speed: 16,000-27,000rpm
X-axis: 8000 mm/min
Y-axis: 8000 mm/min
Z-axis: 500 mm/min
In testing, the X-Carve has run in excess of 800mm/sec.