Looking for something a bit neater, [sandy] built a simple pen plotter to write labels on a roll of tape. The plotter uses the usual 3D printer components like steppers, drivers, belts ...

With the additional goal of keeping the plotter easy to build with cheap parts, the design centers on a “grit roller drive” for the Y-axis — the one that actually moves the paper back and forth.

Unlike some plotters, it can switch between media in the sheet feeder and the roll feeder automatically. Wi-Fi is built in with Wi-Fi Direct available and AirPrint compatibility. The HP Smart ...