STEREOLITHO GRAPHY (SLA)

SLA technology helps to produce high quality models with good surface finish in quick turnaround time. SLA formulates thermoplastic resins into solid objects.


How it works?

  • The SLA process begins when CAD data is sliced into thin cross-sections or layers, typically about six-thousandths of an inch thick.

  • This data is then transferred to an SLA containing a vat of UV-curable photopolymer.

  • The machine begins to build the part one layer at a time.

  • Each layer is constructed from an ultraviolet laser that is directed by X and Y scanning mirrors.

  • As the laser traces the cross-section on the surface of the resin, the liquid material is hardened on contact

  • Once a layer is complete, the build platform is indexed down to make room for the next layer.

  • A recoater blade moves along the surface so that there is an even spreading of the fresh layer of liquid resin.

  • The laser continues to trace and form each layer at the top of previous layer.

  • After completion, the parts are removed from the liquid and separated from the platform. Afterwards, the excess resin dipping is removed by dipping the parts into liquid.


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