The rapid prototyping processes can be broadly classified into processes that uses laser and ones which does not. The laser based processes requires high level of care and maintenance and the machinery is very costly as compared to non-laser based processes. Fused Deposition Modeling (FDM) is second most widely used rapid prototyping technology, after Stereo-lithography (uses laser). In FDM a plastic filament is unwound from a coil and supplies material to an extrusion nozzle which moves over the table in the required geometry and deposits a thin bead of extruded plastic to form each layer of the required geometry. Several materials are available for the process including Acrylonitrile-Butadiene-Styrene (ABS) and investment casting wax. ABS offers good strength, and more recently polycarbonate and poly (phenyl) sulfonic materials have been introduced which extend the capabilities of the method further in terms of strength and temperature range (, 2010). The most important mechanical properties of ABS are impact resistance and toughness which has tensile strength of 22MPa and tensile modulus of 1,627MPa. Also the flexural strength of ABS is 41MPa and flexural modulus of 1,834MPa with IZOD Impact strength of 340 J/m. It also resists heat successfully with its glass transition temperature of 104 degree Celsius and heat deflection temperature of 96 degree Celsius. Support structures are fabricated for overhanging geometries and are later removed by breaking them away from the object. A water soluble support material which can simply be washed away is also available (Gouldsen and Blake, 1998).