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Basic Info

In many respects stereolithography, except that the laser is used to sinter and fuse powder rather than solidify liquid polymer. Inside the SLS machine, a thin layer of powder is laid down and heated to just below its melting-point by infrared heating panels at the side of the chamber. The unfused powder acts as built-in support as the part is lowered and the steps are repeated.

It is important to note that laser sintering is a very localized phenomena. It differs from the baking-like sintering used in more traditional powder metallurgy.