The output clay objects look rough but the precision can probably be improved.
Project developers, Max Sanchez and Taylor Fulton, are architecture students at California College of the Arts. This project was based in a studio course called "Creative Architecture Machines" taught by Jason Kelly Johnson and Michael Shiloh.
Detailed build guide and all the files needed can be found at:
|They mixed the clay for this 3d printer out of:|
|Schematics of air compressor driven clay extruder|
Here you can find detailed video from more precise ceramic clay delta printer: