Novel protease variants derived from the DNA sequences of naturally-occurring or recombinant non-human proteases are disclosed. The physical items have constraints governing manufacture of the physical items. In one example embodiment, the speed of the conveyor is adjusted in accordance with the operation of the baler. The wireless cellular device and the content server interact through a request and reply interface, located within the wireless cellular device, based on inputs from the wireless device user. In one embodiment, the cutting tools are radially mounted to a side periphery of the body portion such that the vertical axis of the cutting tool is substantially parallel to the longitudinal axis of the toolholder.