He kept the parts, but unlike most of us, he did something with them, building a neat little plotter called the Liplo. Most pen plotters work by moving the pen on two axes, but [Benjamin] took a ...

Sure, we see quite a few plotters and other motion machines ... You might ask; if you have a 3D printer, why you wouldn’t just mount a pen on it and call it a day? Well, you could do that ...

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 ...