Conductive ink PCB penplotter type modification for E3 printer

This is an upgrade and current release of the conductive ink 3d printer modifications previously posted

Included here are the parts needed to modify a Creality Ender 3 pro FFF plotter to be able to print traces or other graphics using pens or markers on top of or between extruded materials. The Cura post process script, is originally intended for use with this set up, but robust enough to be adapted to other similar configurations or printers.

The first of three parts is the tool holder, it is a set of two tubes that fits on the extruder carriage, the second part is a boot to hold the Pen or marker, it is designed to float up and down the tool holder tube, and the third part is the cradle to hold the tool holder out of the way when not in use.

The tool holder is designed with two screw together parts per tube, intended to work with the shape of the pen holder, with a cone shape at the top and bottom, these along with adjusting the z height, allow you to adjust the tilt of the