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Fused Deposition Modelling (FDM)
What is Fused Deposition Modelling?
Fused Deposition Modelling (FDM) also referred to as Fused Filament Fabrication (FFF) constructs parts by extruding polymer filament through a heated nozzle.
The molten material is laid onto the build platform where it cools and solidifies, the final construction is made up of many layers of the extruded polymer.
FDM machines require a support material which is laid down via a 2nd nozzle. The support material is usually an different material than the final part material which can be removed via a simple post process where the part is placed into heated water and the support structure is dissolved.
- Layer thickness of 0.12mm to 0.33mm
- Thermoplastic materials for end use performance parts
- Industry approved materials
- Simple and reliable technology
- Quick material changeover
- Large build volumes available
- Good range of materials with colour options
- Parts can be post machined
- Ability to pause build to embed parts into the print (inserts)
- Internal 'Honeycomb' structures can be created to reduce part weight
- Cost effective prints and low cost hardware
- Poor surface finish compared to other technologies
- Weak Z direction
- Limited Z accuracy
- Slow build times compared to other technologies