Selecting the best rapid prototyping (RP) process can be challenging. Without hands-on experience, uncovering both the strengths and weaknesses of a technology can be difficult. Yet, this knowledge is critical in selecting the right tool for the intended application. A previous article by the same author, published in Time Compression Technologies; August, 2002 filled this knowledge gap, from a user perspective, for three technologies: Stereolithography (SLA), Selective Laser Sintering (SLS) and PolyJet. To add to this body of information, another leading technology, fused deposition modeling (FDM) is presented from the user’s point of view. When included in an evaluation, FDM can make selection even more difficult. This is true for two reasons. First, FDM brings forth a new set of evaluation criteria since the technology has a different parameter set than many of the other RP technologies. Second, while it is widely used, the technology is most often applied to internal use rather than service bureau operations, which limits the availability of hands-on data.