3D Print Colorizer is a combination of 3D printed parts and a Cura plugin which allows anyone with an Ender 3 like 3D printer to produce multi colored models. Have a look at some results:
How it works
3D Print Colorizer uses Sharpie or Sharpie-like permanent markers to directly paint on the layers of a 3D print. After a layer is finished printing normally a pen holder, which is mounted to the print head, is used to fetch pens from a special pen rack mounted to the top part of the printer. Normal printing and painting is used alternately to produce a final colored model.
To coordinate the process a special Cura plugin is used to add the painting G-Code. After installing the plugin you need to enter some calibration values and afterwards models sliced for an Multi Extrusion printer can be printed on an Ender 3 with full color support.
Detailed installation instruction are given in the Wiki. Please follow each step to complete the installation and get ready for mutli color printing.
If you want you can: