Direct Metal Laser Sintering (DMLS) 3D Printing

Metal 3D Printing holds a unique position in modern-day product development. It allows for the direct manufacturing of complex end-use parts and facilitates tooling for conventional manufacturing technologies, reducing costs and lead times. This technology is also known as Direct Metal Laser Sintering (DMLS) and Selective Laser Melting (SLM).

Metal 3D Printing

Timeless Material Meets Limitless Technology

Direct Metal Laser Sintering (DMLS) is one of the few 3D printing technologies that directly create a metal part from its 3D computer model. DMLS shares the use of metal powders and lasers to print parts. This technology combines the design flexibility of 3D printing with the mechanical properties of metal. From tooling inserts with cooling channels to lightweight structures for aerospace, any application that involves complex metal parts potentially benefits from Metal 3D Printing.

  • Fully Functional Prototype
  • Conformal cooling channel in Injection molding dyes
  • Topology optimization
  • Heat exchanger and heat sinks
  • Complex assembly as a single part

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Technical Specifications

Build Size

Standard Lead Time

General Tolerances

Layer Height

Surface Roughness


DMLS 3D Printing Materials


Good strength and thermal properties with low weight
Flexible post-processing possibilities

Stainless Steel

Excellent strength, high ductility & good thermal properties
Highly corrosion-resistant

SLS 3D Printing

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Advantages of DMLS 3D Printing

Printed parts with DMLS technology are durable, lightweight and precisely detailed.

Applications of DMLS 3D Printing

Although the most popular industry that uses DMLS is the aerospace industry, other industries use the same process for different applications.





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DMLS Design Guidelines

Wall thickness

Pin Diameter

Escape holes


Unsupported Walls

Aspect Ratio


Minimum Features

Embossed/Engraved Details

Limitations of DMLS 3D Printing

As the cost is often higher with both machines and materials, using this technique is not often fit for producing high volume orders.  Design also is a limitation when using DMLS. This is because not all applications designed when using traditional manufacturing can be converted to a additive manufacturing solution. More restrictions when using DMLS is product size. Most machines, even large machines, have a small build size volume. The average build volume size is 250 mm x 250 mm x 300 mm. Furthermore, machines are very complex to use, coming in industrial sizes and strict operating, material handling, post processing and maintenance procedures.

DMLS Post-Processing

The most frequently used post processing methods are the following;

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How does Metal 3D Printing work?

Metal 3D Printing is a laser-based technology that uses powdered metals. Similar to Laser Sintering, a high-powered laser selectively binds together particles on the powder bed while the machine distributes even layers of metallic powder. Support structures are automatically generated and built simultaneously in the same material, and are later manually removed. Once complete, the part undergoes heat treatment.

The 3D model

A laser melts metal particles together

Successive layers of metal powder are spread on top, while a laser selectively binds particles to form the part and its support

The loose powder is removed

The part undergoes heat treatment

A laser melts metal particles together

The part is finished

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