As part of Francis Bitonti and Xuedi Chen's vertical studio at the architecture school of Rensselaer Polytechnic Institute, teams of 3 were given the task to design a paste extruding 3d printer. Our team initially put together a Printrbot Simple Maker's Edition, and using the basic concepts behind this printer, as well as inspiration drawn from the PiMaker, designed our own.
The main features of the PiBot are a flexible dual extruder system combined with a rotating polar bed. This grants us the ability to both print one object with a combination of materials from the two extruders, as well as print two of the same object at the same time, due to the rotating bed.
Team: Nicholas Nord, Hiroki Sawai, Lauren Famularo
Firmware forked from: https://github.com/Printrbot/Marlin

The only changes to the firmware that were made are that the hot end is disabled.
List of parts:
9 motors
2 100ml syringes
2 18in smooth rods
2 16in threaded rods
8 257mm smooth rods
4 200mm threaded rods
2 end stops
1 auto leveler
12 8mm linear bearings
4 Z-couplers
2 GT2 set screws
2 GT2 belts
2 3/8” Tubes
1 lazy susan bearing
M4 9.5mm screws
M4 hex nuts
2 printrboards
1/4" MDF
Wires
Zip Ties