SLS (Selective Laser Sintering) 3D printing technology is an additive manufacturing technology based on powder materials. In the SLS 3D printing process, the powder material is sintered by a laser beam to create a three-dimensional object layer by layer. Due to its unique manufacturing principle, SLS 3D printing has some advantages, one of which is the absence of support structures.
First, let's take a look at traditional 3D printed support structures. In many 3D printing technologies, such as FDM (fused deposition molding) or light curing, support structures are necessary. This is because these techniques build an object by stacking material layer by layer, and if a certain layer does not have enough support, it may collapse or deform during the printing process.
However, SLS 3D printing technology does not require such a support structure. This is mainly due to how it works and the materials used. In SLS, the powder material is sintered by a laser beam, which allows each layer to be firmly bonded on top of the previous layer. As a result, each layer is able to maintain its shape and stability even without additional support structures.
In addition, the powder material used in SLS also helps to eliminate the need for support. These powder materials typically have high strength and stability, allowing them to maintain their shape during the sintering process. Moreover, due to the high manufacturing precision of SLS, the thickness of each layer can be precisely controlled, thus ensuring the accuracy and stability of the printed object.
Overall, SLS 3D printing is not supported because of its unique manufacturing principles and the materials used. This technology not only simplifies the printing process and improves printing efficiency, but also reduces costs and waste. As a result, SLS 3D printing is widely used in many fields, including aerospace, automotive, medical, and consumer goods.