Nexa3D QLS 820 SLS 3D Printer


The QLS 820 SLS 3D Printer uses Quantum Laser Sintering, a new powder bed fusion technology that combines ultrafast printing, automation-ready hardware and material handling platforms, with powerful software controls to help you achieve production volumes.

Featuring the highest part throughput in its class, the QLS 820 delivers unprecedented production throughput and flexibility, producing parts up to 4x the print speed of traditional laser sintering technologies. With its removable build unit, for independent cool down and de-powdering module, the QLS 820 delivers a polymer-based production alternative to traditional injection moulding with full Industry 4.0 capabilities designed for lights-out 24/7 operation.

The QLS system provides scalable manufacturing through modular design and cloud connectivity. Factory automation-ready, capable of producing ~150K plastic parts annually.

The QLS 820 system features:

  • Fastest SLS system on the market printing up to 8 litres per hour
  • Standard removable build unit to maximise capacity utilisation. Additional build units available
  • Modular Material Processing Station (MMPS). From powder containment and blending to breakout, powder reclamation and sieving, the MMPS offers a scalable solution that ensures safe, clean, and efficient material handling across all material operations
  • Industry 4.0 ready with Siemens integrated factory automation PLC controls
  • Open platform fully compatible with supply chain-approved materials such as PA11 and PA12. Compatible with higher temperature materials such as PA6 at processing temperatures up to 230°C
  • Equipped with DSM PBT powder starter kit for greater performance
  • Low cost of ownership



 QLS 820
Print technology
Selective Laser Sintering (SLS)
Compatible material(s)
 Range of SLS materials:

  • High temperature powders
  • Nylon blends (PA6 / PA11 / PA12)
Build volume
350 mm (w) x 350mm (d) x 400mm (h)
 Print speed  Up to 8 litres hour up to 20% average job density
Z resolution
50 – 200 microns
Dimensions (closed)
2000mm (w) x 1400mm (d) x 2000mm (h)
Design file input
Web dashboard
Laser type
4x 100W CO2
Material delivery system
Removable Build Unit
  Additional equipment  Powder handling and refreshing station
Operating environment
+5˚C / +25˚C
 Power requirements  26 kWatt
Manufacturer Warranty
12 months


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