CD-DVD CNC Pen Plotter

I made this small CNC with parts recovered from old CD and DVD players.
It has very small dimensions and is only capable to make drawings with a pen.
I created the Z axis that allows to move the pen with my 3D Printer:

There is a guide, always retrieved from a CD player, to prevent the pen from rotating and getting stuck in its seat when pushed by the servomotor:

To lift the pen the servomotor pushes it upwards:

The 3D model was designed with SolidWorks CAD software:

The whole mechanics comes from CD and DVD players, like the X axis movement screw:

The drawing plan is a sheet of metal obtained from the structure of a CD player:


The X and Y axes are moved by the stepper motors of CD and DVD players:

The electronics is based on an Arduino with GRBL firmware:

To which the two stepper motors and the servomotor are connected:

The frame is also made of sheet metal from CD and DVD player boxes:


Some drawings made with this CNC: