Of course, the pen or the servo horn slides ... We can tell [DAZ] likes to make motion-based projects. We also thought this reminded us of a whiteboard plotter we saw recently.

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 ...

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 ...