Impression 3D
Frittage laser sélectif (SLS)
AIHFABS SLS 3D printing services fuse engineering-grade SLS plastics into durable, self-supporting parts.
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Challenge
A client required a large-format, grid-like nylon frame for an industrial assembly fixture. The initial CAD file presented significant manufacturability risks: multiple structural ribs and connection points had wall thicknesses below 1.5mm. In Selective Laser Sintering (SLS), such thin features on a large part are prone to warping, breakage during the de-powdering process, or failure under mechanical load. The client needed a solution that maintained the design's functionality while ensuring the part was robust enough for industrial use.
Solution
Our engineering team initiated a collaborative Design for Additive Manufacturing (DFAM) process using SLS Nylon (PA12/PA11) technology.
· Iterative Design Optimization: We analyzed the stress points and identified critical areas where the wall thickness was insufficient. Through several rounds of communication, we guided the client to modify the geometry, increasing rib thickness to a safe minimum of 2.0mm and adding fillets to sharp corners to reduce stress concentration.
· Version Control & Simulation: We reviewed multiple updated file versions provided by the client, running digital simulations to predict thermal distortion. This ensured that the final "Version X" was perfectly balanced between weight reduction and structural strength.
· Precision SLS Production: Once the design was validated, we printed the part using high-temperature controlled SLS printers to minimize internal stress, ensuring the large flat surface remained dimensionally stable.
Results
· Zero Defects: The final printed frame arrived with no warping or broken ribs, successfully passing the client's assembly test.
· Enhanced Durability: The optimized wall thickness increased the part's load-bearing capacity by over 30% compared to the original fragile design.
· Client Satisfaction: The collaborative approach transformed a "high-risk" print into a reliable industrial component, establishing a standard for future large-part orders.
