Compare different metal 3D printing technologies and their applications.

Main metal AM technologies: DMLS/SLM (Direct Metal Laser Sintering/Selective Laser Melting) - uses laser to fuse metal powder, excellent for complex geometries, used in aerospace and medical implants. EBM (Electron Beam Melting) - uses electron beam in vacuum, faster for titanium, common in orthopedic implants. Binder Jetting - binds powder with adhesive then sinters, more economical for larger parts. DED (Directed Energy Deposition) - deposits and melts wire/powder, used for repair and adding features. Selection depends on material, part size, accuracy requirements, and production volume.