Introduction of SLA

Stereolithography (SLA) is the first 3D printing technology to appear and realize commercialization, and it is also one of the most deeply researched and widely used 3D printing technologies.

Fig. 1 shows the components of the SLA 3D printer. The technology uses an ultraviolet laser as a light source, and uses a vibrating mirror system to control laser spot scanning. The laser beam sketches the first layer of the object on the surface of the liquid material. After that, the production platform decreases a certain distance, and then the solid layer is immersed in the liquid material. Repeat this until all components are completed.

Components of a typical SLA machine: 1-printed part, 2-liquid resin, 3-building platform, 4-UV laser source, 5-XY scanning mirror, 6-laser beam, 7-resin tank, 8-window, and 9-layer-by-layer elevation. Fig. 1. Components of a typical SLA machine: 1-printed part, 2-liquid resin, 3-building platform, 4-UV laser source, 5-XY scanning mirror, 6-laser beam, 7-resin tank, 8-window, and 9-layer-by-layer elevation. (Pagac, M.; et al., 2021)


CD BioSciences is a high-tech company focused on 3D printing, offering a rich product portfolio and professional technical support. CD BioSciences has a dedicated team and extensive experience to provide global customers with a variety of 3D printing technology services, including SLA technology. After decades of development, SLA technology has made great progress in both material selectivity and process parameters.

SLA technology uses an ultraviolet laser to precisely cure a photopolymer cross section, transforming it from a fluid to a solid. Accurate parts can be built directly from CAD data without the use of molds.


With the rapid development of 3D printing technology, many new technologies have emerged. SLA technology is still one of the most popular technologies among professionals recently, because the printed parts have the highest resolution and accuracy, as well as the highest surface smoothness.

In addition, SLA technology is not only one of the most mature 3D printing technologies, but also one of the fastest printing technologies. SLA technology can greatly improve manufacturing efficiency, optimize the production structure, and shorten the production and delivery cycle.

SLA is a terrific comprehensive technology that is suitable for various types of materials.

  • Standard resin;
  • Engineering resins, such as ABS-like, and PP-like
  • Resin can be cast
  • Resin for medical purposes
  • Ceramic materials

Applications of SLA

Parts printed with SLA technology have excellent surface smoothness and other properties, so the technology is widely used in multiple fields.

  • Engineering
  • Automobile industries
  • Medical industries
  • Education
  • Consumer goods

Advantages of SLA

  • High dimensional accuracy
  • High resolution
  • Complex details
  • High surface smoothness
  • Isotropy, predictable performance
  • Highly versatile material selection
  • Low cost
  • High speed

As the earliest 3D printing technology, SLA is still constantly innovating and developing. Because of its diverse materials, cheap prices, and very high precision and accuracy of parts, SLA has been widely used in many areas. CD BioSciences provides professional SLA technical service to support the production of your functional prototypes and molds. 

If you are interested in our services, please contact us. All services are available on a 24/7/365 basis.


  1. Pagac, M.; et al. (2021). A Review of Vat Photopolymerization Technology: Materials, Applications, Challenges, and Future Trends of 3D Printing. Polymers. 13, 598.

For research use only, not intended for any clinical use.