Topic: Manufacturing
3D Printing Techniques are
- A. Selective laser sintering
- B. Selective laser melting
- C. Electron beam melting
- D. All the Above
Answer: D. All the Above
Explanation: Selective Laser Sintering (SLS), Selective Laser Melting (SLM), and Electron Beam Melting (EBM) are all popular additive manufacturing (3D printing) techniques used particularly for metals and polymers.