Today’s modern machinery requires fine tolerance and detailed design. High performance machinery must function as required. Without meeting tolerances they cannot function as designed. One of the most important aspects of achieving quality in high performance machinery is the use of Computer Aided Design techniques. Owning or having access to a cad library is essential to the design and manufacturing process. Being able to see your design on a computer printout or in the computer will aid you in visualizing the final product. You begin the manufacturing of your machinery/equipment until the design process is complete. Once you have settled on the design and specifications you are ready to start.