System and method for a quick-change material turret in a robotic fabrication and assembly platform

A method for providing a plurality of printable materials to a robotic fabrication and assembly platform for fabrication of an object, comprising:

• engaging a pneumatic actuator to extend a quick-change turret from a pneumatic seal;
• inserting a plurality of barrels into the quick-change turret;
• aligning one of the plurality of barrels with a pneumatic seal in the quick-change turret;
• disengaging the pneumatic actuator to seat the aligned barrel onto the pneumatic seal;
• printing a three-dimensional object;
• halting the printing of the three-dimensional object prior to completion;
• engaging the pneumatic actuator to extend the quick-change turret from the pneumatic seal;
• selecting another printable material from the plurality of printable materials by rotating the quick-change turret via a turret motor to print in sequence another printable material of the plurality of printable materials;
• disengaging the pneumatic actuator to seat another of the plurality of barrels onto the pneumatic seal;
• and
• resuming printing of the three-dimensional object.