Fused-Deposition-Modeling (FDM)

Fused Deposition Modeling* is a manufacturing process which uses a thermoplastic filament form being used to create a 3D object. The plastic filament is melted and extruded in 2D toolpaths, and layer-by-layer these 2D "slices" are built into the desired 3D object.

*Another name for FDM is Fused Filament Fabrication (FFF) which is the generic term for this technology.

Why would I use this process to create a 3D part?

FDM printing is one of the cheapest 3D printing technologies, so it's great for rapid prototyping or making fun trinkets.  It is also a great option for aesthetic prints since FDM can handle complex geometries that traditional manufacturing methods cannot.

Advantages:

• Large selection of materials, including many common thermoplastics
• Least expensive printer technology and materials
• Possible to print with multiple materials
• Minimal post processing
• Parts are durable over time.
• Can build fully functional parts in standard plastics.

Disadvantages:

• Certain geometries may require supports
• Anisotropic mechanical properties
• Ridges/steps on surface texture
• Detail limited to nozzle size (~ 0.4 mm)