SLA is the 3D printing technology that provides the greatest dimensional accuracy, with the highest resolution and tightest tolerances. In SLA technology, models and prototypes are built up layer by layer from your 3D files.
The technology is suitable for functional models that need high precision, visual models, and as a master for the production of silicone moulds.
SLA technology was invented as early as the 1980s. The model is built up by a laser beam striking the surface of a liquid epoxy resin, which hardens wherever the laser strikes it. The hardened layer is then lowered by 0.1 mm and a scraper applies new material to the surface. The laser then makes another pass, hardening the surface and penetrating into the layer underneath, and thus builds the model layer by layer until it’s completed.
Machine size: 600 x 600 x 400 mm
Normal delivery time: 2-4 days
Minimum wall thickness: 0.3 mm
Layer thickness: 0.05-0.1 mm
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It all starts with a steel brim. The first step in the process is that you build a kind of support on the steel brim itself, or scaffold as it’s called.
The first support layers reach about 6 mm high before the model starts to be built. This support then bears the model itself, which is built layer by layer.
Once the process is completed, the model is washed in alcohol. This is done in several steps to clean it thoroughly. After washing, the model is placed in a UV curing oven to achieve the right characteristics.
Dimensional tolerances: min. ± 0.1 mm and ± 0.15%. Tighter tolerances by separate agreement.
The minimum wall thickness on x/y is 0.25 mm. The minimum wall thickness on z is 0.4 mm.
It’s possible to thread the plastic directly. We also have the possibility of putting threaded inserts into your models to obtain longer-lasting threads.
Unless otherwise agreed, our models are delivered to Polyshape’s “standard”
