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