Fraser Ross' DIY Pen is a flatpack biro kit. A laser-cut sheet of plywood contains pop-out wooden donuts of various sizes, and these are slotted to fix onto two spars which form the twin scaffold ...

that moves the paper media forward and aft underneath the pen. The software chain used here is sort of uncommon compared to other inexpensive DIY CNC machines we see here on Hackaday.

Custom written software converts SVG graphic files to gcode suitable for printing. Enabling the pen plotter to use a selection of different stroke and fill types, and separation of different ...