and reclaiming system 36 are controlled preferably by the nc controller 14 in accordance with the invention a commercially available cad software program called autocad available from auto desk inc is used to design the pattern the cad program runs preferably on computer 10 autocad is used by the designer to create drawings which contain the specific information needed other commercially available or custom designed cad programs may be used in other embodiments of the invention autocad generates ascii text drawing interchange files called dxf files which contain all of the drawing information also in accordance with the invention a second commercially available software program called 34 the complete post processor 34 commercially available from nc micro products inc runs on computer 10 this program converts the dxf output files from autocad into the required nc machine code for use by the nc controller 14 in accordance with the invention the output file generated by this program meets the interchangeable variable block data format for positioning contouring and contouring positioning numerically controlled machines rs 274 d approved by the electronic industries association as described above preferably the nc controller 14 manufacturing equipment includes an allen bradley series b 8400mp numerical controller 14 the output file from the post processor computer program is.