Recently, the use of Ultem material was made available to the engineering community through the Fused Deposition Modeling (FDM) additive manufacturing process.  This is a big step for product development because it starts to break down barriers many people have regarding the use of rapid prototyping before purchasing injection molds. The use of rapid prototyping to confirm designs is used by some and not by others.  A top reason given is that the materials do not accurately simulate the material that is going to be used for the injection molded part.  This is a true statement but it is also a misleading statement.  Material is just one piece of the equation for confirming a new product design before proceeding to injection molding of the part.  Many of the issues experienced during the injection molding stage are related to part design versus the part material.  Using additive fabrication to produce a part before injection molding allows all the stakeholders to review the part for design integrity and functionality.  The part material has some impact on the part integrity but it is not a show stopper.  But now with the use of production grade materials for the rapid prototyping of the part, it removes the perceived barrier many people use. In the end, the new material is another step in helping streamline the product development process and allows companies to reduce the time needed to launch a new product.