SLS Technology

Selective Laser Sintering (SLS) is an Additive Manufacturing process that uses a plastic powder to obtain the final parts. The material is heated near to the melting temperature in the build chamber and then a laser melts the powder to get the shape of the part. Once the layer is finished, the base of the chamber go down and the process is repeated layer by layer until the final part is done. In this case the layer thickness is 0,120mm.

Support structures are not needed in sintered process because not sintered powder stands this type of geometries.

SLS Technology

Part example with balls inside the balls

Tolerances between movile parts

This technology can produce assemblies inside the machine and parts inside other parts. The minimum distance between the mobile parts to obtain good mobility is 0,4mm. Take into account that once the piece has done the dust must be removable, it is advisable to perform a series of extraction channels. There is the possibility of obtain better accuracy requesting our technicians.

SLS assembly render of LTK enterprise

Real assembly after production

Design guide

Minimum wall thickness 0,8-1 mm
Minimum detail 0,3 mm
Accuracy 0,1% (min +/- 0,2)
Maximum part size 330x350x560mm
Layer thickness 0,120 mm

The size is important

The maximum size of piece to buy by web is 330x350x560mm although it is possible to obtain bigger parts. In this case, we proceed to divide the piece into different parts and then assemble them. The result is incredibly good so if you want to make your pieces in parts, please contact us.

Customize your parts

If you want to include customized texts in your .stl pieces, we kindly recommend to lead the texts towards the exterior with minimum height 1mm and 1,2 mm wide. For readable texts Mizar recommends size letter up to 3,5 mm.

For impressed texts, please respect the parameters in the table below.

Embossed text
hmin 1 mm
e min 1,2 mm
Hmin 3,5 mm
Engraved text
Min depth 1,6 mm
emin 1,2 mm
Hmin 4,5 mm


Real surgery model

Architectural model

Architectural model