Lego Technic/NXT 3-axis CNC mill
I'm a huge Lego fan and often finds it creatively insightful to prototype product ideas in Lego form. As a prototype medium, it's fantastic. It's easily adjustable in size and function. You have programmable functionality via stepper-motors, DC motors and all kinds of sensors - ultrasonic, color, push sensors and more.
This build shown above is serial number 6. Perhaps there will be a SN7 one day.
