PBF technology.
SLS. MJF. DMLS.
3D printing process.
Powder Bed Fusion (PBF) — laser/jet/electron beam fuses powder layer by layer. SLS, MJF for plastic. DMLS, EBM for metal. Industrial 3D printing standard.
Key principles.
Layer fusion
Powder bed. Energy source (laser, jet, EB) fuses one layer. Bed lowers, new powder, repeat.
Selective Laser Sintering
Single laser per layer. Standard for nylon prototypes and production.
Multi Jet Fusion
HP's technology. Print head deposits fusing agent, IR lamp fuses. Faster than SLS.
Direct Metal Laser Sintering
Metal powder fused by laser. Aerospace, medical, complex metals.
Electron Beam Melting
Vacuum chamber, electron beam fuses metal. Specialty for titanium.
Up to 380 × 280 × 380
Standard build size. Larger machines available.
FAQ
SLS vs FDM?
SLS: better mechanical properties, no support structures, complex geometry. FDM: cheaper, faster setup, simpler equipment.
Surface finish?
PBF as-built Ra 10-20 µm. Bead blast or polish improves. CNC machine for tight tolerance.
Tolerance achievable?
±0.2 mm typical. ±0.05 mm with care + post-machining.
Powder reuse?
PA12 powder reuse 30-50% blend. DMLS metal reuse 70-80% blend with virgin.
Cost vs CNC?
Complex geometry: PBF cheaper. Simple geometry: CNC cheaper. Each suits different design.
Major applications?
Aerospace lightweight structures, medical implants, fixtures, low-volume production.
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