EOS M 100

The EOS M 100 is a DMLS 3D printer from EOS with a 100 x 100 x 95 mm build volume.

Specifications

EOS M 100: Technical Overview

Technology and Operating Principle

The EOS M 100 operates on Direct Metal Laser Sintering (DMLS): a 200 W single-mode fiber laser with a 40 µm focal diameter fuses metal powder layer by layer in an inert atmosphere.

Laser System

Single 200 W single-mode fiber laser (~1070 nm); scanning speed up to 7 m/s; 40 µm focal spot diameter: among the smallest in its class.

Build Volume and Platform

Circular build platform with 100 mm diameter, maximum build height 95 mm. The platform can be pre-heated to reduce residual stresses during processing.

Chamber and Environment.

Calibration

Calibrating the EOS M 100

1. Substrate Plate Leveling

Before each build, level the steel base plate using adjustment screws and a dial indicator. Acceptable deviation is below 50 µm across the entire surface. Perform leveling at operating chamber temperature to account for thermal expansion.

2. Laser Beam Calibration

Verify the focal diameter (40 µm) using standardized test scans. Deviation should not exceed ±5 µm.

Common defects

Typical Defects with the EOS M 100

Gas and Keyhole Porosity

Insufficient or excessive energy density creates gas inclusions or keyhole cavities. Symptoms include reduced mechanical strength and voids visible in metallographic cross-sections. Solution: optimize volumetric energy density (VED = P/(v×h×t)) using a parametric matrix.

Delamination and Cracking

Residual cooling stresses can cause layer delamination, especially in nickel superalloys and cobalt-chrome.

What it is used for

Applications of the EOS M 100

Medical and Dental

The 100 mm circular platform is an ideal format for dental crowns, bridges, surgical guides, and orthopedic implants. Compatibility with Ti6Al4V ELI and medical-grade CoCr makes the system a preferred choice in dental labs and medical device manufacturers.

Research and Development.