FDM vs SLS vs DMLS: Which 3D Printing Technology Is Right for Your Part?

<p>With dozens of 3D printing technologies available, selecting the right process is critical. Here's a practical guide to the three most widely available technologies at US service bureaus.</p><h2>FDM (Fused Deposition Modeling)</h2><p>Best for: Concept models, jigs & fixtures, low-cost functional parts. FDM extrudes thermoplastic filament layer by layer. It's affordable but layer lines are visible and strength is anisotropic.</p><h2>SLS (Selective Laser Sintering)</h2><p>Best for: Complex geometries, functional prototypes, small production runs. No support structures needed, excellent mechanical properties, and nylon PA12 is the workhorse material.</p><h2>DMLS (Direct Metal Laser Sintering)</h2><p>Best for: Metal parts, aerospace, medical, tooling inserts. Produces fully dense metal parts from stainless steel, titanium, Inconel, and more. Expensive but unmatched for metal complexity.</p>

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