FDM or Fused Deposition Modeling is one of the most wide-spread 3D printing technologies nowadays.
This technology is referred to as FDM or as FFF (Fused Filament Fabrication).
Advantages of the FDM process:
The prints are made of plastic, and therefore are suited for end use.
Exceptionally wide range of materials to choose from.
Wall thickness and infill density can be specified, which allows the print to be very light, but at the same time very sturdy as well.
FDM prints can be surface treated and painted easily.
Low material cost.
Disadvantages of the FDM process:
Slow – This is one of the slowest processes.
Layering is visible – layering is more apparent than in the case of other 3D printing technologies.
FDM technology has a wide range of application. This process is used for most general 3D printing tasks, but it is also used to build concept models, functional prototypes, scale-models, jigs, fixtures, and occasionally even for tool manufacture. This technology is becoming increasingly popular and has a pretty wide amateur fanbase as printing household items and spare parts becomes more and more widespread.