Design Guides

Multi Jet Fusion uses a fine-grained materials that allows for ultra-thin layers of 80 microns. This leads to parts with high density and low porosity , compared to parts produced with Laser Sintering. It also leads to an exceptionally smooth surface straight out of the printer, and functional parts need minimal post-production finishing. That means short lead times, ideal for functional prototypes and small series of end-parts

MJF Design Guides

When designing for MJF, consider the following recommendations to improve the overall quality and finish of your product.
Build Volume: 380x358x380mm
Tips & Tricks:
Wall thicknesses from 2.5 to 3.8 mm are ideal
Susceptible to warping, large flat areas must be avoided
Thin-walled or large, flat surfaces should be reinforced with ribs or gussets
Fast speed
High quality printouts
Low cost
High density and low porosity
High cost of equipment and con-
Limited materials
The raw parts are greyhan SLA
Surface Finishes:
Sand blasting
PA 12
PA 12 Glass Bead
PA 11

Tolerances: Layer thickness is 0.1 – 0.2mm. SLA is very accurate in the x and y direc-tions, meaning models are very accurate to CAD. General tolerance is±0.3mm.

Walls: QSYrapid recommend a wall thickness of at least 1 mm. Large parts may requirelarger wall thicknesses or added ribs or fillets for reinforcement.

Mating Parts: Minimum 0.5mm gap between axel and bore or other moving parts.

Hollowing: We recommend a minimum of 0.5mm but the larger the better especially as wall thickness or depth increases.

Lattice Structures: Are at risk of closing up if not designed with 0.5mm > minimum height.


Embossed and Engraved Details: Pins ≥ 0.8mm but even then risk breaking. Embossed features ≥ 0.3mm.