Metal 3D Printing Overview and the Best SLM/DMLS 3D Printers on the Market

About this Video

• Video Title: Metal 3D Printing Overview and the Best SLM/DMLS 3D Printers on the Market
• Channel: Top 3D Shop Inc.
• Speakers: Top 3D Shop (implied)
• Duration: 00:09:20

Introduction

This video provides an overview of Selective Laser Melting (SLM) 3D printing technology, explaining its process and comparing its advantages and disadvantages to traditional manufacturing methods. It also reviews several top-performing SLM 3D printers on the market.

Key Takeaways

• SLM/DMLS/LMF/LPBF: These are different names for the same metal 3D printing method, with LPBF (Laser Powder Bed Fusion) considered the most accurate term. The video uses SLM for consistency.
• SLM Process: A high-powered laser selectively fuses metal powder layer by layer, creating a three-dimensional object. The platform lowers after each layer is fused.
• Support Structures: Unlike some additive manufacturing methods, SLM generally doesn't require support structures, although they may be used to manage heat and prevent deformation.
• Materials: SLM uses various pure metal powders and alloys, including aluminum, cobalt chrome, copper, nickel, stainless steel, tool steel, titanium, and precious metals.
• Printer Considerations: When choosing an SLM printer, factors like laser power, number of lasers, laser spot diameter, scanning algorithms, speed, layer thickness, and cooling system are important.
• Post-Processing: SLM-printed parts usually require post-processing, including removing powder and support structures, and surface finishing.
• Strength and Durability: SLM-printed parts can have finer microstructures than cast parts, leading to higher tensile properties in some cases, but a direct comparison isn't always straightforward due to differing manufacturing processes.
• Top SLM Printers: The video showcases several popular SLM 3D printers, including models from 3D Systems, EOS, SLM Solutions, Farsoon, and H3D, highlighting their build volumes, layer thicknesses, laser power, and material compatibility.
• Applications: SLM 3D printing is used across various industries, including aerospace, automotive, and medical, for rapid prototyping, mass production, and on-demand manufacturing of high-quality metal parts.