Hi. I recently purchased one of your shields and I am going to integrate it to a makeblock xy plotter (driving with arduino mega). Have you found out how to use some of the new cartridges?, are you going to persuit it or you just consider it finished with this ones?. The use of multicolor cartridges will open the door to a lot of oportunities, because if you are doing a powder printing, you can use maybe an epoxic material or a catalist (also another color if desired).
And about the adderfab, are you or your group still working with it? There is not a lot of information about it.
Thanks and great Job