What is FDM 3D printer and how it works?

fdm 3d printer

The  fdm 3d printer also known as fused deposition modeling or FFF i.e. Fused Filament Fabrication is a manufacturing process of additive type which belongs to the family of material extrusion.fdm 3d printer In this process, an object is created by depositing the melted material selectively in a path which is pre-determined layer by layer. The materials which are used in this process are thermoplastic polymers that come in the form of a filament.

It is a widely used method of 3D printing and represents a largely installed base of 3D printers on a global basis and it is often the basic technology to which people are exposed to.

 

How does it work?

FDM process works in this way:

  1. A spool of a thermoplastic filament is loaded in the printer first and then when the nozzle reaches the desired temperature then it is fed into the extrusion head and also in the nozzle where it gets melted.
  2. Then the head of extrusion is attached to a system of 3-axis and allows it to move in all x,y and z axis. The material which is melted is extruded in form of thin strands and is then deposited in layers in predetermined locations where it then cools and also solidifies.
  3. In order to fill an area multiple passes are needed and when a layer is completed then the build platform shifts down and the extrusion head would move up and also a new layer gets deposited. This is done for all layers.