The FDM technique is based on liquefaction of a wire shaped plastic by heating it up. During the following cooling process it becomes firm again. The material is liquefied in a free movable extrusion head which deposits the plastic in one cross section of the model onto the other.
The layer thickness can, depending on requirement, vary between 0.025mm and 1,25mm. The wall thickness is 0,2mm minimum.

If required, supporting structures can be built from a different material during the same process. The structures can be easily removed later on.

Features:

A possible material is ABS which is highly stable (tensile strength 35N/mm², e modulus of elasticity 2500N/mm²) and can be used for functional models e.g. mounting tests.

FDM is one of the most precise rapid technologies (0,1mm - 0,2mm). The models are highly detailed, show low distortion and further processing is possible.
After finishing, the high surface quality makes FDM models attractive to be used as design models and originals for vacuum casting or RIM.

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