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3D Printing for Architects with MakerBot by Matthew B. Stokes

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Understanding stereolithography

In SLA printing, an ultraviolet laser traces the cross-section of a part onto the surface of a vat containing an ultraviolet curable photopolymer resin. The resin exposed to the light will cure and solidify, sticking to the layer below it before the platform descends by a set distance and more liquid resin is added to the vat. This process will repeat for each subsequent cross-sectional layer until the three-dimensional part has been created. The following image illustrates this process:

Understanding stereolithography

SLA printing

The source of this image can be found at http://en.wikipedia.org/wiki/File:Stereolithography_apparatus.jpg#filelinks ...

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