The Phase I milestone is:
1. Build a mathematical model that, given a set of mesoscale particles with manufacturable properties, theoretically confirms at least one viable procedure for constructing and disassembling macroscopic 3D solid objects under external command. The objects must have functional properties that are useful in the real world (e.g., a wrench).
The Phase II milestones are:
1. Starting with a single set of mesoscale particles, experimentally demonstrate externally-directed assembly of four distinct macroscopic 3D solids (cube, cylinder, sphere, triangular prism), each ~100 cm3 in volume;
2. Experimentally demonstrate interlocking/adhesion of mesoscale particles to create bulk matter with an elastic modulus typical of plastics (0.2 to 4 GPa), followed by unlocking to recover the original particles.