Subtractive manufacturing vs additive manufacturing

Subtractive manufacturing is a process by which 3D objects are constructed by successively cutting material away from a solid block of material.

Additive Manufacturing (AM) is an appropriate name to describe the technologies that build 3D objects by adding layer-upon-layer of material, whether the material is plastic, metal, concrete or one day…..human tissue.


3dprint a car

Advantages

  • Not wasting material
  • Rapid prototyping - Small-scale version of the real object in less time than using conventional methods
  • Customization
  • Local manufacturing

Disadvantages

  • It is slow
  • Limited Size – The size of objects created with 3d printers is currently limited
  • Limited Raw Materials

Fused Deposition Modeling (FDM). A common 3D printing technique that creates objects by melting filament and extruding it through a small nozzle that moves in three dimensions.

Selective Laser Sintering (SLS). A 3D printing technology that uses high intensity light to sinter a powdered material.



Stereolithography (SLA). A 3D printing technology which makes objects by using a high intensity light or a laser to harden a plastic resin.




Last modified: Sunday, 17 December 2017, 11:37 PM