If you instead want to produce art on a larger scale, a plotter can be a great way to go ... the top corners of the blackboard, and move the pen holder via a pair of toothed belts, counter ...

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 ...