Requirements

Continuous printing in clay starting from clay powder
Powder allows for easy and continuous material flow with augers and pumps, and easy mixing into a fluid material
Mixing chamber premixes clay and water
Pump, probably peristaltic, pumps into a pressure chamber
Pressure chamber operates by air pressure
Clay print head has automatic flush with water, so maintenance is zero on print head
Mixing chamber retains settled clay material, so cleanout/maintenance requirement is zero between prints
Ability to print with common clays, found in many locations worldwide
Includes ball/roller mill for powdering clays from local sites (rocks are turned to clay-size particles)

Continuous Clay Printer Requirements + Value Proposition