Among the technologies you use for to create the worlds fastest rapid prototype, the FDM method is very popular and stands only second to stereolithography. In this process you unwound a filament made of plastic from the coil. In this way materials are supplied to the extrusion nozzle.

The nozzle is thereafter exposed to heat for melting the plastic. A mechanism is put in place to ensure that the molten plastic flow can either be turned on or turned off depending on the requirements. For this purpose a mechanical stage is used. The nozzle is mounted on the stage. The stage can be moved either vertically or horizontally.

When this nozzle is moved on top of the table following the specified geometrical patterns, a thin bead of extruded plastic is deposited there. This thin plastic deposit forms each of the layers in the prototype object. Apropos to its nature the plastic immediately hardens coming out of the nozzle and it bonds with the layer immediate below it. A chamber is also used to contain the entire system. Temperature of the chamber is maintained at just below the point at which the plastic would melt.

Divergent types of materials including ABS and casting wax are used. Recently the polycarbonate as well as the polysulfone has both been used to the material lists. Techniques like the SLS white through which you can make small or large parts using either plastic or nylon materials helps achieve quality and durability.