But some 3D printed pulleys and a very simple-looking core XY arrangement looks like this ... why you wouldn’t just mount a pen on it and call it a day? Well, you could do that, of course ...

It’s why desktop 3D printers are such a powerful tool, and why this scalable plotter from the [Lost Projects ... GT2 belt and pulley to move the pen back and forth. We particularly like the ...

A type of pen plotter that wraps the paper around a drum with a pin feed attachment. The drum turns to produce one direction of the plot, and the pens move to provide the other. The plotter was ...