Selective Laser Sintering (SLS®) is an additive manufacturing technique that uses a high power carbon dioxide laser to fuse small particles of plastic powder into three-dimensional objects. The laser selectively fuses powdered material by scanning cross-sections generated from a representation of CAD data on the surface of a powder bed. After each cross-section is scanned, the system lowers the powder bed one layer thickness, applies a new layer of material on top, and repeats the process until the object is completed.