Selective Laser Sintering (SLS) is an additive manufacturing technology that uses lasers to sinter (heat and fuse together) powdered material layer by layer to form a three dimensional part.  Selective Laser Sintering printers build parts from the bottom up by heating and fusing powdered material (typically nylon) using laser energy.
A part is designed using a 3D CAD system such as SolidWorks, AutoCAD Inventor, ProE, etc.  The native CAD file is exported to a STL file which is a rendered surface model used by 3D printing software.  The STL file is then processed through the printer software for part orientation and layer slicing.  The file is sent to the printer and each layer (cross-section) is sintered with laser energy.  After each layer is sintered, a new layer of powder is evenly dispersed over the bed and previous layer.  The next layer is then sintered to the preceding layer.  This process continues for each cross-section layer until the part is complete.  No additional supports are required for overhangs and undercuts as the powder from each previous layer acts as the support.  When complete the parts are removed from the un-sintered powder and the un-sintered powder is recycled and reused in the machine for future builds.

Selective Laser Sintering printers make strong end-use parts and functional prototypes with outstanding resolution, surface finish and edge definition.  Along with Fused Deposition Modeling (FDM), Selective Laser Sintering is allowing us to provide a cost effective solution for low volume production parts without the need for expensive tooling.


  • Excellent surface finish with invisible build lines
  • End use parts due to consistent part quality and variety of mechanical properties
  • Living hinges and snap fits
  • Rubber-like flexibility and durability for gaskets and bellows
  • Cost effective low-volume production
  • Medical grade materials that can autoclave


  • Aerospace
  • Medical
  • Consumer products
  • Industrial
  • Automotive
  • Commercial



  • Build Volume:  15 x 13 x 18 in (380 x 330 x 457 mm)
  • Accuracy:  0.003 – 0.006 in Layer Thickness (0.08 – 0.15 mm)
  • Minimum Wall Thickness:  0.030 (0.75mm)
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Langston McDowell Owner, Narrow Gate Drafting & Design
Avid 3D Printing offers more than rapid prototyping services: they provide quality design and engineering advice for your concept, as well as 3D printing services that suit your product best. They continue to astonish me with rapid turnaround times and competitive pricing. I look forward to utilizing Avid 3D Printing and their wide range of prototyping capability for years to come.