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SLS

Selective Laser Sintering (SLS) uses the heat of a high-power laser beam to sinter particles of thermoplastic or metal powder together, one layer at a time.

After each cross-section is scanned, the powder bed is lowered by one layer thickness, a new layer of material is applied on top, and the process is repeated until the part is completed.

The most commonly used SLS material is DuraForm, a powdered version of nylon.

The main benefit of SLS prototypes is their ability to serve as functional rapid prototypes. SLS prototypes have a slightly granulated surface finish, but can be finished to a much higher level by hand.

SLS technology delivers tolerances of +/- 0.005 of an inch and produces features as small as 0.020 of an inch.

APPLICATIONS AND BENEFITS

Fully functional prototypes with high mechanical and thermal resistance
Excellent for snap-fits and living hinges (Duraform EX only)
Can be used for limited run production as end-use parts
Excellent long-term stability and resistant to most chemicals
USP Level VI certified as biocompatible when sterilized in an autoclave (PA only)

See the Duraform material specifications (PDF - 111KB).

See the Duraform EX material specifications (PDF - 182KB)