What is FDM Printing?

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Fused Deposition Modelling (FDM) or Fused Filament Fabrication (FFF) is a method of Additive Layer Manufacturing (ALM) where thermoplastic filaments are heated and extruded to construct 3-dimensional forms.

The process starts by “slicing” CAD models into instructions for an FDM printer to follow. The slicer defines printing parameters such as orientation, print speed, temperature, infill, and build plate adhesion. Once all parameters are set, the model is sliced into a series of cross-sectional XY layers. The code is then generated and can be sent to the printer.

During the printing process, the print head moves horizontally along the X and Y axes while thermoplastic filament is heated and extruded through a fine nozzle rapidly cooling and solidifying to create a layer. The build plate is then lowered vertically (Z-axis), and the process starts again with the newly deposited plastic bonding to the layer below. This layer-by-layer process continues until the entire model has been constructed. The print can then be removed from the build plate, and any support structures & build plate adhesion can be removed from the part.

Applications:

• Concept / Sketch Models

• Functional Prototypes

• Manufacturing Aids

• Small-volume production parts.