Resin printing, also known as Stereolithography (SLA) printing, is a type of 3D printing technology that uses photopolymer resins to create objects. In a resin printer, a vat of liquid photopolymer resin is exposed to a highly focused UV light source. The UV light causes the resin to cure and solidify, forming a single layer of the object. The build platform then lowers by a fraction of a millimeter, and the process is repeated until the entire object has been built.

Resin printing is known for producing high-quality prints with intricate details and smooth surfaces. The technology is often used to create models and prototypes with complex geometries and thin walls, as well as small, highly detailed objects such as jewelry and figurines.

One of the main advantages of resin printing is the ability to produce highly accurate and detailed objects with smooth surfaces. Resin printers also typically have a much higher resolution than other 3D printing technologies, making them ideal for creating fine details and small parts.

On the downside, resin printing can be more challenging than other 3D printing technologies, as the resin can be messy and requires careful handling. Additionally, the technology can be more expensive than other 3D printing methods due to the cost of the photopolymer resin and the specialized equipment required.

Overall, resin printing is a powerful tool for creating high-quality, highly detailed 3D objects. It is widely used in various industries, including product design, architecture, and jewelry.