Advantage

One of the main advantages of SLS is that it does not require the support structures used by many other AM technologies to protect the design from collapsing during production. Since the product is in a powder bed, no support is required. This attribute alone, while also conserving materials, ensures that SLS is capable of creating geometries that no other technology can produce. In addition, we don’t need to worry about damaging the part when removing the supports, so we can create complex interior components, so complete sections. As a consequence, we can save time on the assembly process. As with other AM techniques, there is no need to compensate for the issue of tool clearance—and therefore the need for joints—that subtractive methods frequently encounter. So we can make geometries that were previously difficult, minimize assembly time, and reduce poor joints. SLS is capable of producing highly durable components for real-world testing and mold construction, whereas other methods of additive manufacturing may become brittle over time. Since SLS parts are so durable, they compete with those made in conventional production methods such as injection molding, and are already being used in a range of end-use applications such as automotive and aerospace applications. Another major benefit of additive manufacturing with SLS is the ability to store and reproduce parts and die as 3D CAD data that will never corrode, lose transport, or require expensive storage. The designs are always available and ready to be produced when we need them, even if the original is not available.

Application

Due to its ability to easily manufacture complex geometries with little to no additional fabrication effort, SLS technology is commonly used in many industries around the world. It’s most common application is early in the design cycle in prototype parts, such as investment casting patterns, automotive hardware, and wind tunnel models. In addition, limited production of SLS is increasingly being used to produce end-use parts for aerospace, military, medical, and electronic equipment. SLS can be used on the shop floor to rapidly assemble machines, jigs, and fixtures. Since the process requires the use of a laser and other costly, bulky equipment, it is not suitable for personal or residential use; however, applications in the field of art have been established.