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Selective Laser Melting or Metal Powder Bed Fusion is a 3D printing process which produces solid objects, using a thermal source to induce fusion between metal powder particles one layer at a time.

Most Powder Bed Fusion technologies employ mechanisms for adding powder as the object is being constructed, resulting in the final component being encased in the metal powder. The main variations in metal Powder Bed Fusion technologies come from the use of different energy sources; lasers or electron beams.

  • Types of 3D Printing Technology: Direct Metal Laser Sintering (DMLS); Selective Laser Melting (SLM); Electron Beam Melting (EBM).

  • Materials: Metal Powder: Aluminum, Stainless Steel, Titanium.

  • Dimensional Accuracy: ±0.1 mm.

  • Common Applications: Functional metal parts (aerospace and automotive); Medical; Dental.

  • Strengths: Strongest, functional parts; Complex geometries.

  • Weaknesses: Small build sizes; Highest price point of all technologies.

Selective Lazer Melting (SLM)

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