Fused Deposition Modeling

The Fused Deposition Modeling (FDM) is a rapid prototyping technique used to convert CAD drawings into physical parts or objects. The process works by extruding a semi-molten plastic filament through a heated nozzle in a planned pattern of layers. When one layer is complete, the platform lowers by a layer thickness and the process continues. A durable part with regular surface finish and tolerance is created. It can be regarded as an excellent option for the 3D Models that want to closely characterize the final product in strength and toughness.

These models can be produced in round about twenty four hours or more depending on the size and complexity of the object. It is perfectly suited for Conceptual models, Engineering models, and Functional Testing prototypes. The Materials used in the FDM process are ABS, polycarbonate, polyphenylsulfone and polycarbonate/ABS blend. These materials are available in several standard colors. The method is office-friendly and quiet.

It is quite fast for small parts on the order of a few cubic inches, or those that have tall, thin form-factors. It can be very slow for parts with wide cross sections. The finishing of parts produced with this technique has greatly improved over the years. FDM prototypes have become the preferred choice among designers, engineers, researchers, students and many other areas that use rapid prototyping. FDM creates tough parts that are ideal for functional usage. The advantage of using this system is the relative simplicity of the procedure. It does not need laser systems, uses comparatively inexpensive binders, and there is a choice for the materials to be used.

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