SLA Printing

SLA-Printing (Stereolithography) is a method of 3D printing that uses a liquid plastic that is cured layer by layer with a UV laser. It allows for the creation of highly detailed and precise objects.

How SLA printing works

SLA printing starts with a CAD model that is divided into thin layers. Each layer corresponds to a specific slice of the object. The UV laser moves over the surface of the photopolymer resin and cures it according to the pattern from the CAD model. Once a layer is cured, the building platform is lowered, and a new layer of resin is applied to repeat the process until the whole object is finished. 

Advantages of SLA printing over SLS and FDM 

SLA printing offers several advantages over SLS printing (Selective Laser Sintering) and FDM printing (Fused Deposition Modeling). 

• High precision: SLA offers superior accuracy and detail. 
• Smooth surfaces: Produces parts with very smooth surfaces perfect for aesthetically demanding projects. 
• Complex shapes: Possible to create complex shapes and fine details. 
• Choice of materials: Uses liquid photopolymer resin that can provide different mechanical properties.

Applications for SLA Printing

SLA technology is currently used in several professional and industrial fields where high precision and detail are essential. In dentistry, SLA is an established method for producing splints, crowns, bridges and models for implants, where accuracy and fit are critical. In medical technology, the technology is also used to produce prototypes and customized prototype components which require both biocompatible materials and a fine surface finish.

Beyond the medical field, SLA is common in the functional prototyping industry, where small tolerances and complex geometries need to be verified before series production. In jewelry production and precision design, SLA also offers great advantages, as the technology can reproduce intricate details with high accuracy.

Limitations and challenges

Despite its advantages, SLA technology also has some limitations. For example, material choices are limited to photopolymer resin, which may not always meet the requirements of all applications. In addition, post-processing, such as curing under UV light, may be necessary to improve material properties.

Our services

We are experts in 3D printing and product development. We offer services such as SLA and FDM printing, covering many needs in prototyping and small-scale 3D printing. Today we work with the world's best SLA printers from Formlabs. Our printer can print with a variety of materials and we look forward to printing your unique parts.