Selective Laser Sintering (SLS)

Selective Laser Sintering (SLS) 2017-07-17T09:56:45+00:00

One of the most widely used prototyping technique for functional parts and components due to its ability to create complex geometries very easily. Accurate prototypes and functional production parts with high durability, using multiple nylon based powders

Laser sintering refers to a laser based 3D printing process that works with powdered materials. IT works with different types of nylon materials with varying levels of stiffness and ductility.

Rapid prototyping technique 3D Printing Laser Sintering

3D Printing Laser Sintering

The laser is traced across a powder bed of tightly compacted powdered material, according to the 3D data fed to the machine, in the X-Y axes. As the laser interacts with the surface of the powdered material it sinters, or fuses, the particles to each other forming a solid. As each layer is completed the powder bed drops incrementally and a roller smoothens the powder over the surface of the bed prior to the next pass of the laser for the subsequent layer to be formed and fused with the previous layer. The build chamber is completely sealed as it is necessary to maintain a precise temperature during the process specific to the melting point of the powdered material of choice. Once finished, the entire powder bed is removed from the machine and the excess powder can be removed to leave the ‘printed’ parts.

One of the key advantages of this process is that the powder bed serves as an in-process support structure for overhangs and undercuts, and therefore complex shapes that could not be manufactured in any other way are possible with this process. With no need for support structures, this technology is suitable for interlocking parts, moving parts, living hinges and other highly complex designs and gives infinite design freedom.However, on the downside, because of the high temperatures required for laser sintering, cooling times can be considerable.

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  • Prototypes with good mechanical properties

  • Complex geometries and large build volume parts

  • Small parts in limited volumes as end use parts

  • Functional fitment analysis
  • Light weight designs

  • Spare parts and complicated art forms

Duraform Nylon PA                                                                      View Data sheet

Tensile Strength(MPa)Flexural Strength(MPa)Impact StrengthHardness
43483280 D

Nylon GF 30%                                                                      View Data sheet

Tensile Strength(MPa)Flexural Strength(MPa)Impact StrengthHardness
31NA32NA

Nylon Ex black                                                                      View Data sheet

Tensile Strength(MPa)Flexural Strength(MPa)Impact StrengthHardness
3715-173274 D

Minimum Wall thickness: 0.8 – 1 mm

Minimum details size: 2.5 mm (for text/ hole diameters etc)

Layer thickness: 0.1 mm

Max dimensions: 650 x 330 x 560 mm

Standard Accuracy: ± 0.3% (with lower limit on ± 0.3 mm).

Lead Time: Minimum 3 working days for despatch

Surface finish: Sharp grainy matt finish

Basic: Powder removal, Blasting, Smoothing

Add on: Primer, Coating/ Painting

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