SLS (Selective Laser Sintering) is industrial 3D printing without moulds or milling. A laser fuses layers of plastic powder into your final product. The surrounding powder acts as built-in support. The result: complex geometry, internal channels and overhangs without support structures.
How the printer builds your part
You upload a STEP or STL. Our slicing software places it virtually in the build volume, together with other parts. A full build prints tens to hundreds of pieces at once.
The bed sits at 170-175 °C, just below the melting point of PA12. A thin layer of powder is spread. The CO₂ laser traces the shape of your part on the layer. Powder fuses into a solid mass. Platform drops 0.1 mm, new layer, repeat.
This runs for thousands of cycles. After cooling we dig the part out of the powder cake and blast it clean.
What makes SLS unique
Two properties. One: the powder bed is built-in support. Overhangs, internal channels and lattices go without struts. FDM and SLA always need support structures that you have to remove later.
Two: SLS parts are isotropic. Strength is equal in every direction. FDM prints have 30-50% weaker inter-layer bonding. For parts loaded in multiple directions, or with unpredictable orientation, that difference is decisive.
What we print on our machines
11 EOS machines (3x P500 dual-laser, 7x P396, 1x P110) run tens of thousands of parts each year. Typical use: functional prototypes in PA12, structural brackets in Carbon LW, snap-fits in PA11, food-safe parts in PA12 Blue MD. For large series: PA 950 HD, through-and-through black at 35% lower per-piece cost.