Strengths & Benefits
No Support Structures Needed
The surrounding powder supports the part during printing, allowing for highly complex geometries.
Strong and Functional Parts
SLS produces durable parts suitable for functional testing and end-use applications.
Rapid Prototyping
Produces strong, detailed prototypes similar to injection-molded parts for fast design iteration.
Good Mechanical Properties
SLS parts are isotropic (uniform strength in all directions), unlike many other 3D printing types.
Efficient Use of Material
Unfused powder can often be reused, reducing waste and material costs.
Ideal for Batch Production
Multiple parts can be nested in one build, making it cost-effective for short production runs.
Limitations & Challenges
Rough Surface Finish
SLS prints tend to have a grainy surface texture, often requiring post-processing.
High Equipment Cost
More expensive and complex compared to FDM or SLA machines.
Post-Processing Needed
Parts must be cooled, depowdered, and often finished (dyed, polished) after printing.
Powder Handling Risks
Fine powders require careful handling, ventilation, and protective equipment.
Slow Cooling Times
Parts must cool down inside the machine to avoid warping, increasing the total turnaround time.
Limited Material Colors
Most SLS prints are in white or grey nylon; vibrant colors typically require post-processing.
