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Metal 3D Printing Service

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CapabilitiesCustom Online 3D Printing ServiceDirect Metal Laser Sintering (DMLS) 3D Printing Service

Direct Metal Laser Sintering (DMLS) 3D Printing Service

Upload your CAD files to get an instant quote on metal prototypes and production parts. Free shipping on all US orders.

How It Works
Applications and Benefits
Download Guide

DMLS Produces High-Quality Metal Parts Without Tooling

Direct metal laser sintering (DMLS) is a metal 3D printing technology used to build metal parts with exceptional mechanical properties and precision. Our Manufacturing Supplier Network gives you massive on-demand production capacity with a wide range of DMLS machines and high-performance materials.

Designers often chose DMLS for its ability to produce all-in-one metal assemblies and highly precise metal parts with complex features like internal supports and lattices. DMLS does not have upfront setup or tooling costs, making it an affordable option for fully dense metal parts, with the design freedom of additive manufacturing. With DMLS’s affordability, speed, and superior design freedoms, companies and creators can build metal designs they never thought possible and produce accurate metal components.

Xometry Direct Metal Laser Sintering 3D Printing Service Capabilities


Build Size


10" x 10" x 10" (250 x 250 x 250 mm)


General Tolerances


+/- 0.005” for the first inch is typical, plus +/- 0.002” for every inch thereafter


Layer Height


.0012” - .0016" depending on material


Surface Roughness


150-400 µin Ra, depending on build orientation and material used for the build





This table depicts the general tolerances for Direct Metal Laser Sintering (DMLS). Stresses during the build and other geometry considerations may cause deviation in tolerances and flatness. Part designs with thicker geometries, flat or broad parts, and parts with uneven wall thicknesses may be prone to significant deviations or warp. Improved tolerances may be possible with a manual quote review, after successful completion of a prototype build, and must be approved on a case-by-case basis. General tolerances apply before secondary finishing or post-processing unless otherwise specified. Please check out Xometry's Manufacturing Standards for more information on tolerances per process.

How a Direct Metal Laser Sintering Machine Works

Direct metal laser sintering (DMLS) is an additive metal printing technology that builds metal parts from a CAD file by selectively fusing stainless steel or aluminum powder into thin layers. 

Direct metal laser sintering’s layer-by-layer printing allows multiple parts to be combined during the printing process. With traditional manufacturing processes, metal parts are machined or metal casted into several parts and assembled. Printing an all-in-one assembly strengthens the finished part while reducing the weight and cost of production significantly. DMLS techniques can also create parts at a high density. This is ideal for parts under high pressure such as in oil and gas industries.

Direct metal laser sintering DMLS 3D printing services

Direct Metal 3D Printing Materials

DMLS Materials Available at Xometry:
Material NameDescriptionData Sheets
Material Name

3D Printed Aluminum AlSi10Mg


Lightweight aluminum alloy. A great alternative to machining complex geometries.

Data Sheets

AlSi10Mg Data Sheet

Material Name

3D Printed Stainless Steel 17-4


Fully-Dense 17-4 PH stainless steel metal, hardness 40 HRC, heat treatable.

Data Sheets
Material Name

3D Printed Stainless Steel 316/L


Fully-dense 316L stainless steel metal, superb corrosion resistance, meets requirements of ASTM F138.

Data Sheets

Additional materials are available upon request! Review more information about our materials here.

Available Finishes

Standard: In addition to the removal of support structures, the part surface is media blasted to provide a uniform finish.

Custom: Additional DMLS post-processing, such as CNC Machining of features and polishing, are evaluated on a case-by-case basis and can be requested in the quoting tool.

    dmls aluminum

    Best Applications for DMLS

    Rapid tooling

    Rapid Tooling

    Because DMLS parts are strong yet lightweight, they are widely used for rapid tooling, fixtures, and jigs.

    Fast parts and fast shipping

    Rapid Prototyping

    DMLS metal laser printing is typically affordable and fast, and therefore is often used to make proof-of-concept models and fully functional late-stage prototypes.

    Digital manufacturing


    Cast-quality finish (fully dense) and durable materials make DMLS printing a favorite technology for end-use products.

    Direct Metal Laser Sintering DMLS 3D printing services

    Ready to get started on your 3D printing quote?

    Free shipping on all 3D printing

    Why Choose Xometry for DMLS 3D Printing?

    Massive Network Capacity

    Endless Options

    Choose from thousands of possible combinations of materials, finishes, tolerances, markings, and certifications for your order.

    Instant Quoting Engine

    Easy to Use

    Get your parts delivered right to your door without the hassle of sourcing, project management, logistics, or shipping.

    Guaranteed Quality

    Vetted Network

    We are ISO 9001:2015, ISO 13485, and AS9100D certified. Only the top shops that apply to become Suppliers make it through our qualification process.

    DMLS Part

    Download the DMLS Design Guide