CNC or (Computer Numeric Control) is used in many machines such as 3D printers, pick and place machines or even laser cutters. This cool project from Automotive uses CNC to create an Arduino powered drawing machine.
Building your own CNC plotter would be a great way to learn about more advanced applications of Arduino, and there is no excuse not to get started with full video tutorials available. The plotter uses a number of stepper motors and servos to precisely control the system’s movements. To find out more check out the following link or the video below.