In the dripping workflow, the designer programs the robot to deposit concrete at specific points in space, or “drops,” and then instructs the robot when to revisit each drop and in what order. Each drop has two temporal parameters (or, delays) that are encoded within it: extrusion time, which is the duration for which the extruder is active at the drop, and wait time, which is the duration for which the extruder waits before moving to the next drop. These temporal parameters determine the local structure and aesthetics of the print. For example, a drop that has not been visited for a long duration will conform less to a new deposit than its more recently visited neighbors. The dripped thing emerges from the delayed depostion process and assumes a materiality that is representative of the time that went into its making.