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 ...

Decades ago, [Vegipete] found an old drum plotter at a university used equipment sale. This plotter was old in the 80s, so like any great tinkerer, [Vegi] reverse engineered the plotter’s ...