Selective Laser Sintering (SLS), SLS Prototype

The use of selective laser sintering prototyping (commonly called SLS prototyping or 3D SLS prototyping) is ideal for product prototypes that require exceptional strength, or must closely approximate the properties of thermoplastics.

ProtoCAM is a premier selective laser sintering bureau, specializing in the creation of SLS prototypes through the use nylon, metals and elastomers. Our advanced selective laser sintering and SLS equipment allows for the rapid product prototype creation, in complex shapes and forms.

Why selective laser sintering (SLS) prototypes?

In selective laser sintering (SLS), three-dimensional parts are created by fusing (“sintering”) powdered thermoplastic materials with the heat from an infrared laser beam. Thin powder layers are repeatedly laser sintered, creating the desired 3D piece based on a 3D CAD model. Selective laser sintering is an additive manufacturing sequence process, as parts gradually increase in size until they reach prescribed dimensions.

SLS or SLA?

There are several key differences between prototypes created using selective laser sintering (SLS) and prototypes created with stereolithography (SLA). These include:

• Prototype strength: SLS prototypes are generally stronger and more durable than SLA prototypes.
• Material properties: Selective laser sintering allows product prototypes to be created with material properties similar to those of injection molded prototypes.
• Surface finish: SLS prototypes have a powdery finish, unlike stereolithography/SLA prototypes, which are smoother.
• Machining properties: It is easier to machine prototypes created using selective laser sintering than those created using stereolithography or SLA.
• Metal product prototypes: ProtoCAM has the ability to use selective laser sintering to create metal prototype parts. This is accomplished by using metallic powder in the laser sintering process.
• Material choice: Selective laser sintering/SLS allows for product prototypes in many different thermoplastic or metal materials. With two decades of experience in the rapid prototyping industry, ProtoCAM specializes in helping customers select the best material for their prototype.
• Post-completion processing: There is typically very little (if any) processing required after the selective laser sintering process is completed.