Laser Sintering (LS)

Powdered thermoplastic (typically nylon) is precisely fused by a high-powered laser. Parts are cleaned of excess powder and ready for use or higher level finishing. **Also known as Selective Laser Sintering (SLS)

Laser sintering can be used to create tough, geometrically complex components for manufacturing. Following vapor smoothing, these production parts are water-tight, air-tight, heat resistant, strong, and easy to reproduce. Nylon also offers the possibility of producing living hinges and flexible end-use parts and can be easily dyed in a variety of colors.

Laser Sintering at Midwest Prototyping


EOS, 3D Systems, and Prodways

Max Build Area:

26 in. x 13.5 in. x 21.8 in.

Lead Time:

3 – 5 Days


Flame Retardant Nylon 11, Glass Filled Nylon 12, Mineral Filled Nylon 6, Nylon 12

*Most common materials are listed in bold.


+/- .005 in. for the first inch and +/- .002 in. for each additional inch

Layer Thickness:

  • EOS:  .005 in.
  • 3D Systems:  .004 in.
  • Minimum Feature:  .02 in.

Do you have a question about your design or materials that would fit your project? Email one of our Solutions Managers.

Laser Sintering Materials



Key Characteristics

More Information

Fire Retardant Nylon 11 material that meets the FAR 25.853 60 second burn specification.

  • White
  • Flame Retardant
  • Heat Resistant
  • Rigid

Nylon 12 fortified with glass beads.  This material creates parts with higher thermal stability and stiffness than regular Nylon 12.

  • White
  • Chemical Resistant
  • Heat Resistant
  • High Strength
  • Impact Resistant
  • Rigid
  • UV Stability

Mineral Filled Nylon 6

Ultrasint PA6 MF

Ultrasint PA6 MF is a mineral-filled polyamide with excellent tensile strength, stiffness, thermal properties, and chemical resistance.

  • Black
  • High Strength
  • Heat Resistant

Nylon 12

PA 2200

Nylon 12 is a robust thermoplastic with exceptional physical properties.  

  • White
  • Chemical Resistant
  • Good for Snap Fits
  • Heat Resistant
  • High Strength
  • Impact Resistant
  • Rigid
  • UV Stability

Compare Materials

Laser Sintering Finishing Levels





Excess powder removed and lightly bead blasted

Standard finish. Parts have visible layer lines and sandstone texture.


Excess powder removed, lightly bead blasted, and sealed to lessen porosity

Sealed finish. Parts have visible layer lines, sandstone texture, and a slight gloss. Parts have a watertight finish.

2 +

Excess powder removed, lightly bead blasted, and cosmetic surfaces sanded to 180 grit

Functional finish, removes some layer lines. Parts have a light texture from sanding.

Excess powder removed, lightly bead blasted, and smoothed using PostPro3D

PostPro3D equipment is used to perform physiochemical smoothing. Smoothed parts have an air-tight, injection molded like finish.


Sealed, primed, or smoothed with PostPro3D and sanded to 320 grit

Near show quality finish, removes layer lines. Parts may have very fine scratches from sanding. Parts are prime and paint ready.

Are you ready to get your ideas made?

Our RFQ Team is standing by to give you a quote, and parts can be done in days, or contact one of our Solutions Managers for answers to a question! 

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