Advances in 3D printing technology have revolutionized the prototyping process. Utilizing traditional machining methods to create a prototype requires a large investment in time and money. In many cases, it can now be done in days for a fraction of the cost. This “rapid prototyping” is done by printing a huge quantity of extremely thin layers of material that build up to achieve the desired shape. Even the finest details can be accommodated. CAD designs are sent right from the designer’s computer to the printer. In addition to the very significant time and cost savings, this method makes design changes and comparative prototypes far more practical.