3D-CAM Fused Deposition Modeling

Fused Deposition Modeling is a solid-based rapid prototyping process that extrudes material, layer-by-layer, to build a model. It is used to produce functional ABS thermoplastic models directly from CAD data. The system utilizes a CNC-controlled, specially designed extruder-head, production quality thermoplastic, and a build platform. The melted thermoplastic material is delivered through the extruder-head nozzle onto a build platform.

The nozzle squeezes a fine filament of melted thermoplastic and deposits it layer-by-layer on the platform to create a two-dimensional cross section of the model. The cross section of liquid material immediately solidifies on contact in the cooler environment. The platform descends and the next layer is extruded upon the previous layer. This process continues until the model is complete. The model is removed from the build chamber and cleaned, finished and prepared for delivery.

The finished part has the strength of the build material in the X and Y direction. Layer to layer adhesion, however, does not have the same characteristics of the build material and is somewhat weaker in strength.

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FDM Highlights

Fused Deposition Modeling (FDM) is the ideal choice for:

Conceptual models, engineering models and art objects that do not require high accuracy
Prototypes that require production quality ABS
Low cost plastic prototypes

Material choices include:

ABS, for concept designs and visualization models
Polycarbonate for automotive and aerospace applications

Dimensional tolerances:

+/- 0.005″ for the first 2”, 002” for each additional Inch.

Layer thickness:

Standard resolution of 0.010″
Minimum wall thickness of 0.020″

Build envelope:

12” x 12” x 12” (Z axis/vertical).
Stitching of parts to create larger models is available.

Turn-around:

Typical turn-around time is 48 hours depending on finishing requirements.

Finishing types:

Only standard finish is available on FDM parts