1. We would like to increase the print speed of the Jellybox. We are suggesting the division of the the single extruder into 4 separate extruders that divide the work load and make printing more efficient. 2. This would likely be useful for printers using more than one color of filament, and to solve several issues of maintaining heat in the extruders, preventing drips of unwanted color within the print, and increasing efficiency, the principle of Discarding and Recovering provided the solution of rotating un-used print heads out of the way while not in use.