The paper presents the design and making of a Computer Numerically Controlled (CNC) pen plotter in order to realize very high precision levels in graphic design and drafting. Specifically, this system integrates an ATmega328p microcontroller with A4988 stepper motor drivers and advanced software tools like Inkscape and Universal Gcode Sender. Thorough testing showed that the CNC plotter was capable of attaining a positional error margin of ±0.1 mm, thus proving its precision. Comparative studies with commercial plotters showed our plotter to be highly versatile and cost-effective, competitive in precision. The results returned from testing the system for plotting complex designs with details on different materials proved it to be workable in a solution for professional and amateur applications. Further improvements could be made by increasing speed, implementing AI for real-time error correction, and broadening functionality to support multi-color plotting and 3D printing. These findings show how, with the CNC pen plotter, there is very great potential for completely redesigning the working scheme in graphic design and drafting processes.