Plotter Pen Holder For Robo 3D R1 Plus

This is a plotter pen holder for the Robo 3d R1 Plus. It started life as an attempt to use the Robo as a PCB resist plotter, which sad to say wasn't as great an idea as I may have hoped. The accuracy falls short of far better options, although it does work and can be used for demonstration or educational purposes in that regard. This is more useful for plotting basic art for signs or decoration. It was designed to use a Sharpie Extra Fine Point marker, although I'm sure it would work well with a