USA Glossary and Reference Guide to 3D Printing Terminology and Concepts

Glossary of 3D Printing Terms [2]

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Selective Laser Sintering (SLS) Selective Laser Sintering (SLS) is an industrial-grade 3D printing technology that uses a high-powered laser to sinter powdered material into solid layers. Materials commonly used in SLS include nylon, polyamides, and metals. The powder acts as both the material and support, enabling the creation of complex geometries without the need for additional support structures. SLS is widely adopted for functional prototyping and production of durable, end-use parts. The process delivers excellent mechanical properties and design freedom but requires specialized equipment and post-processing, such as powder removal. It's ideal for engineering, automotive, and aerospace industries.

Stereolithography (SLA) Stereolithography (SLA) is a 3D printing technique that uses a laser to cure liquid resin into solid layers, one at a time. This process is known for its precision and ability to create intricate details, making it ideal for applications requiring high accuracy, such as dental models, jewelry, and prototypes. SLA printers use photopolymer resins, which harden when exposed to specific light wavelengths. Post-processing is essential in SLA to remove excess resin and strengthen the parts. Despite its higher cost compared to FDM, SLA is popular for industries demanding smooth surface finishes and complex geometries.