Resin

Resin is a liquid material that is used in the 3D printing processes stereolithography (SLA) and digital light processing (DLP). These processes use light-sensitive resins that harden through targeted exposure to UV light or visible light. Resins are specially formulated photopolymers that are available in liquid form and form solid plastic parts when exposed to light.

SLA and DLP are known for their ability to print highly precise and detailed objects with excellent surface quality. These processes start with a tank of liquid resin into which a build platform is gradually immersed to create layer after layer. The light source selectively hardens the resin, creating the desired design. The UV light from SLA typically comes from a laser, while DLP uses a projector.

Resin-based printing techniques are ideal for applications where fine detail and smooth surfaces are critical, such as jewelry design, dentistry, prototyping or small part manufacturing. Different resin grades are available to offer specific material properties such as flexibility, hardness, temperature resistance or coloring, which further increases the versatility of these technologies.