Design Guidelines: Selective Laser Sintering

Our basic guidelines for selective laser sintering include important design considerations to help improve part manufacturability, enhance cosmetic appearance, and reduce overall production time.


Maximum Dimensions

PA 650 19 in. x 19 in. x 17 in.
PA 850 Black, PA 614-GS, DuraForm HST 10.6 in. x 12.6 in. x 16 in.
PA 650 482mm x 482mm x 431mm
PA 850 Black, PA 615-GS, DuraForm HST 269mm x 304mm x 406mm


Layer Thickness 0.004 in.
Minimum Feature Size 0.030 in.
Layer Thickness 0.1016mm
Minimum Feature Size 0.762mm
an applications engineer examines a bed of nylon powder for selective laser sintering


  • PA 650
  • PA 850 Black
  • PA 614-GS
  • DuraFromHST



a 3D printing technician removes nylon powder from an SLS part
SLS part in nylon powder

Surface Finishes

STANDARD Bead blast to remove all powder, which leaves a consistent overall texture.
Secondary options include a primer or dye color that can be applied as well as taps and inserts.


a 3D printing technician bead blasts a nylon SLS part


Our SLS equipment includes sPro140 machines, which have the world’s largest sintering build volume, and feature fully digital high-speed scanning systems, unparalleled process consistency, and closed systems for powder blending and delivery for reliable part quality. We also use sPro60 machines, which allow for multiple materials and high throughput.

applications engineers discuss 3D printing CAD model

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Thanks for your interest in Proto Labs. Please let us know how we can provide more information on our services. Once we receive your comments, an applications engineer from our team will follow-up as soon as possible.

If you have a 3D CAD model of your part ready, upload it online now to receive an interactive quote with free design for manufacturability feedback within hours.

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