SLS

SLS – Selective Laser Sintering

Selective laser sintering, or SLS, is used where the functionality and durability of the part are important. By choosing different materials, you can get parts with extreme flexibility, rigidity and resistance to aging. SLS is a additive manufacturing method where we create the part directly from your CAD data without first producing a tool. 

Advantages

SLS is the best option if you need your product to be made from a durable material. By choosing different materials, you can get parts with extreme flexibility, rigidity and resistance to aging.

SLS – Technical information

SLS is a additive manufacturing method where we create the prototype directly from your CAD data without first producing a tool. 
By means of various types of post-processing, design models can be produced, for instance. In this case the part is polished and lacquered to make it as similar to the end product as possible. We add different surface textures, graphics, print and colours.

Guidelines

  • Grainy surface.
  • Risk of warping on large flat areas.
  • Uneven wall thickness can affect accuracy in the form of non-linear shrinkage.
  • Threads of less than M10 are not recommended directly in the plastic. For smaller threads and strengthening purposes, HeliCoil or Trisert thread repair inserts are a good idea. In the case of HeliCoil, please inform us before we manufacture the parts so that we can enter the threads directly in the CAD model and fit the thread inserts later on. External threads of less than M10 are not recommended. These are machined into the finished part.
  • For surfaces with an angle of less than 20° to the X/Y plane, distortion due to the layer effect (stepping) can be marked. The steeper the angle, the better the surfaces.
  • To obtain a press fit, ensure a gap of 0.1 mm (average particle size X2). This fit will be slightly looser on wear (particles work loose over time).
  • To obtain moveable parts printed in a workpiece, ensure a gap of 0.4 mm in X/Y/Z. It is also important that loose powder in the gap can be removed.
  • Working hinges can be easily achieved in polypropylene. However, it is important that one takes care when first opening the item to which they are attached, so as to ensure longer service life of the hinge. Hinges can also be made from PA2200, but their service life tends to be shorter.

Customer case – Anatomic Studios

A completely new dimension in prosthetics!

At Anatomic Studios, they saw more or less immediately that this was a product made for 3D printing. Total freedom in principle in terms of the design of patterns and skin, with no extra costs for complex geometries. The possibilities of additive manufacturing are exploited pretty much to the full.

Material

Here are a number of different materials with unique properties

PA2200

Colour: White
Polyamide 12
Biocompatible
Medical grade

PA3200

Colour: Light grey
Polyamide 12
With glass beads for greater torsional stiffness.

PA1101

Colour: Yellow beige, dyed black

PA 11
Increased flexibility

Enhanced impact strength

Made from renewable material (castor oil)

Improved chemical resistance

PA2210FR

Colour: White
Polyamide 12
Class V0 fire-rated

PA2240FR

Colour: White
Polyamide 12
Class V0 fire-rated
Suitable for the aerospace industry

PP R-201

Colour: Beige white
Polypropylene
Enhanced impact strength

Duraform Flex

Colour: Beige white
Rubber-like
Shore 80A

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