Stereolithography

Using stereolithography (SLA) we build accurate parts with a good surface finish using a liquid epoxy resin. Parts can be sanded smooth and painted, making this technology suitable for mock-ups and prototypes. With the right material, SLA can also be used to create jigs and tools to aid manufacturing.


The stereolithography build process

The SLA process uses a vat of UV-curable liquid resin which is cured by a laser to build parts one thin layer at a time. The laser ‘draws’ a single layer cross-section of the part on the top surface of the liquid resin, curing and solidifying it whilst joining it to the layer below.

Once a layer has been drawn and cured, the SLA machine’s platform is lowered by an amount equal to the depth of one layer. This then allows the re-coater blade to sweep across the vat, spreading another layer of fresh resin, ready for the laser to draw on. In this way a whole three dimensional part is built up. Once completed, the build is drained, washed in a chemical bath to remove the excess resin, and then finished to your specifications.

SLA Machine - 3D Printing at Graphite Additive Manufacturing

SLA at a glance

Benefits of SLA
• Accuracy
• Good surface finish
• Can build larger components

Best suited for
• Concept models
• Prototypes
• Lenses
• Parts for metal plating
• Jigs and dies

Materials for SLA
• ABS-like SLA
• Ceramic SLA


Graphite Additive Manufacturing

3D Printing consultancy and manufacturing for designers and engineers

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