3D printer manufacturer WASP has developed a new LDM (Liquid Deposition Modeling) clay or paste extruder that has solved many of the technical problems associated with printing with paste materials. In order to develop even more materials and printing parameters, they formed a partnership with artist and ceramic 3D printing educator Francesco Pacelli, who is experimenting with a WASP delta 3D printed fitted with the LDM extruder. You can find out more about how Pacelli made his incredible clay sculptures over on 3DPrint.com: http://3dprint.com/116971/francesco-pacelli-wasp-delta/