SUNDSTRAND ELECTRIC POWER SYSTEMS IN LIMA, OHIO IS USING 3-D SOLID MODELING AND VARIOUS RAPID PROTOTYPING TECHNOLOGIES TO ENHANCE THE IMPLEMENTATION OF INTEGRATED PRODUCT AND PROCESS DEVELOPMENT (IPPD), MORE COMMONLY KNOWN AS CONCURRENT ENGINEERING. PROJECT DESIGN/BUILD TEAMS RAPID PROTOTYPE KEY COMPONENTS SUCH AS COMPLEX INVESTMENT CASTINGS TO VERIFY FORM, FIT AND FUNCTION USING STEREOLITHOGRAPHY, SELECTIVE LASER SINTERING, OR OTHER APPROPRIATE PROCESSES. NUMERICAL CONTROL MACHINE TOOLS DEVELOP MILLED OR TURNED PARTS FROM THE SOLID MODEL DATABASE AND SUPPLIERS ARE INCLUDED IN THE DESIGN AND DEVELOPMENT PROCESS AS PARTNERS TO PROVIDE DESIGN INPUTS THUS AVOIDING COSTLY MANUFACTURING ERRORS. THE DESIGN/BUILD TEAMS ALSO PRODUCE ENGINEERING VERIFICATION TEST PARTS VIA RAPID PROTOTYPING TECHNIQUES. THIS PAPER REVIEWS SPECIFIC CASE STUDIES WHERE RAPID PROTOTYPING TECHNOLOGIES WERE USED ON T