EOS M 100 Compact Metal 3D Printer

$250,000 – $450,000 Updated 2026-03-17

Key Specifications

Build Volume (X×Y×Z)

Ø100 x 95 mm (cylindrical)

Layer Thickness

20 – 80 µm

Laser Power

1 x 200W fiber laser

Number of Lasers

Build Rate

Up to 5 cm³/h (material-dependent)

Materials

CoCr (dental/medical), Ti-6Al-4V ELI, gold alloys, silver alloys, stainless 316L

Overview

The EOS M 100 is EOS GmbH's compact metal powder bed fusion system, designed for laboratories, R&D centers, and production facilities that require DMLS capability with minimal floor space, reduced powder consumption, and lower per-part costs on small or intricate components. With a 100 mm diameter cylindrical build volume, the M 100 is purpose-built for small, high-value parts — dental prosthetics, jewelry, medical implants, aerospace brackets, and precision tooling inserts — where build volume is less important than geometric precision and material quality.

The M 100 uses a single 200W fiber laser with a tightly focused 40 µm spot diameter, enabling finer feature resolution than larger-format LPBF systems. This finer spot size combined with EOS's DMLS process parameter sets allows the M 100 to produce thin walls, fine lattice structures, and intricate internal channels that would be at the resolution limit of machines using larger spot sizes. The cylindrical build chamber also reduces the dead volume around parts, lowering the amount of unsintered powder per build and reducing material waste on small batch production.

EOS has developed dedicated parameter sets for the M 100 targeting the dental, medical, and jewelry industries. For dental laboratories and dental milling centers, the M 100 processes cobalt-chrome (CoCr SP2 dental) for crowns, bridges, and partial frameworks with the same EOS DMLS quality assurance used in larger medical platforms. For jewelry production, EOS offers gold and silver alloy parameter sets — a unique capability among industrial LPBF systems. For medical applications, the machine processes titanium (Ti-6Al-4V ELI) and CoCr for small implant components.

Control and build preparation use EOS's EOSPRINT 2 software, consistent with EOS's broader product line. The M 100's compact size — approximately 750 x 1,300 mm footprint — allows installation in labs and small production environments where a full-size LPBF system would be impractical. It is frequently used as a process development platform before scaling to larger EOS systems, as parameter sets are transferable across EOS's DMLS product family.

Full Specifications

Parameter	Value
Build Volume (X×Y×Z)	Ø100 x 95 mm (cylindrical)
Layer Thickness	20 – 80 µm
Laser Power	1 x 200W fiber laser
Number Of Lasers	1
Build Rate	Up to 5 cm³/h (material-dependent)
Materials	CoCr (dental/medical), Ti-6Al-4V ELI, gold alloys, silver alloys, stainless 316L
Accuracy	±0.05 mm for details under 30 mm
Machine Weight	Approx. 410 kg
Build Volume	250 x 250 x 325* mm (9.8 x 9.8 x 12.8 in)
Laser Type	Yb-fiber laser; 1 x 400 W
Presicion Optics	1 F-theta-lens(es); 1 High-speed scanner(s)
Scan Speed	up to 7.0 m/s (23.0 ft/s)
Focus Diameter	approx. 100 µm (0.00394 in)
Power Supply	1 x 32 A
Power Consumption	max. 8.5 kW / typical 2.4 kW
Compressed Air Supply	7 Bar; 20 m³/h (102 psi; 706 ft³/h)
Machine Dimensions	2500 x 1300 x 2190 mm (98.4 x 51.2 x 86.2 in)
Recommended Installation Space	min. 4800 x 3600 x 2900 mm (189.0 x 141.7 x 114.2 in)
Machine Weight	approx. 1250 kg (2756 lbs)

Specifications sourced from eos.info — verified 2026-03-28

Strengths & Limitations

Strengths

40 µm laser spot size enables finer feature resolution than larger LPBF systems for intricate small parts
Cylindrical build chamber minimizes dead volume and powder waste for small-batch production
Dedicated parameter sets for dental CoCr, medical titanium, gold, and silver alloys
410 kg machine weight and compact footprint enable lab and small production room installation
EOSPRINT 2 software consistent with larger EOS systems for parameter transfer and process development

Limitations

Ø100 mm cylindrical build volume severely limits part size and batch capacity
Single 200W laser provides low absolute build rate — not suitable for production volume requirements
Higher cost per cm³ build volume than larger LPBF systems when amortized over production output

Best For

Dental laboratories and dental milling centers producing CoCr crowns, bridges, and partial frameworks Medical device R&D facilities developing small titanium and CoCr implant prototypes and early production Jewelry manufacturers requiring gold and silver alloy LPBF capability with industrial process control

Frequently Asked Questions

01 Why is the EOS M 100 build volume cylindrical rather than rectangular?

A cylindrical build chamber optimizes the geometry for small, round or centrally-placed parts — common in dental and jewelry applications — while minimizing the volume of unused powder in the build chamber. This reduces material waste and simplifies powder recovery compared to a rectangular chamber of equivalent diameter. It also reduces the overall machine footprint.

02 Can the M 100 process precious metals like gold?

Yes. EOS offers qualified parameter sets for gold alloys (including 18K yellow gold and 18K white gold) and sterling silver for the M 100. This is a relatively rare capability in industrial LPBF — most platforms focus on engineering alloys. The M 100's small build chamber and precise laser control make it well-suited to jewelry production where fine detail and material value both demand minimal waste.

03 How does the M 100 fit into a process development workflow for larger EOS systems?

The M 100 uses the same EOSPRINT 2 software and DMLS process framework as EOS's larger systems. Parameter sets developed on the M 100 can be transferred — with appropriate validation — to systems like the M 290 or M 400-4 for scale-up. This makes the M 100 an efficient development platform for new materials or geometries before committing to full-scale production builds.