I’ve always been interested in CNC machines, 3D printers and plotters, so I decided to build my own drawing plotter based on the CoreXY design. The goal was something that works well and is open source, so others could build it or change it for their own projects. At the time, the alternatives were all quite expensive.

Why a CoreXY Plotter?

After looking at different plotter designs, I settled on CoreXY because it has some nice advantages. Its belt system keeps both motors still, which means less moving weight and potentially faster, more accurate movement. That seemed ideal for a drawing plotter, where precision matters, and I also wanted to use linear rails.