controls 24 of algorithm 36 and of the driven table and the motion drive therefor form no part of the present invention and accordingly are not further detailed herein fundamentally what takes place in the operation of system 20 to produce a given type of mechanical device is that a user selects a particular kind of device to build selects an appropriate size and configuration for that device and then determines what are the best and most appropriate internal mechanical properties that should be created in that device in order to enable it to function properly with respect to implementing a selected task in general terms the semiconductor materials out of which a particular material can be selected to produce such a device are those whose internal crystalline structures are closely linked to the material 39 s mechanical properties specifically the various useable semiconductor materials are those whose internal crystalline structures can be modified by laser processing to produce desired mechanical properties for a device various materials with respect to which the present invention can conveniently and very successfully work will be discussed very shortly but it might be noted at this point that these materials with respect to their precursor states i e their states before processing.