What to Look for When Buying a Used EOS System
EOS systems are precision industrial machines built for demanding production environments. Careful inspection ensures a used unit meets your quality and throughput requirements.
Verify laser source condition and hours. Request total laser hours and compare against rated lifespan (Yb-fiber lasers on metal systems typically last 50,000 to 100,000 hours; CO2 lasers on polymer systems run shorter). Test power output against original spec, as degraded power impacts part density, surface quality, and build reliability.
Inspect the optical system. Review calibration records or request a calibration build. Check the F-theta lens and protective glass for contamination, scratches, or coating degradation, all of which affect dimensional accuracy and surface finish.
Evaluate the recoater and build chamber. Check the recoater blade or roller for wear, nicks, and straightness. Inspect the chamber for cross-material contamination. On metal systems, verify inert gas delivery for proper flow and oxygen levels. On polymer systems, check heating elements and temperature uniformity.
Confirm software licensing. EOS systems require EOSPRINT for build preparation and may include EOSTATE monitoring. Verify all licenses transfer, as older versions may limit material parameters or build strategies.
EOS Metal 3D Printing Systems
EOS M 290
The EOS M 290 is the most widely installed metal AM system in the world and the most traded EOS platform on the used market. It features a 250 x 250 x 325 mm build volume, a 400W Yb-fiber laser, and processes titanium, aluminum, stainless steel, nickel alloys, and more. Succeeding the M 280, it offers improved gas flow, integrated monitoring, and enhanced stability.
EOS M 300-4 & M 400-4
The EOS M 300-4 delivers next-generation metal AM with four 400W lasers, a 300 x 300 x 400 mm build volume, and modular architecture with automated powder handling. The EOS M 400-4 scales to 400 x 400 x 400 mm with four lasers for large-format serial production in aerospace, automotive, and energy.
EOS M 100
The EOS M 100 is a compact metal system with a 100 mm diameter by 95 mm build volume and a 200W fiber laser, designed for dental, jewelry, and small-component production.
Legacy EOS Metal Systems
The EOS M 280 and M 270 are widely available on the used market. The M 280 handles most M 290 materials with improved monitoring, while the M 270 remains capable for prototyping and low-volume work. EOSINT M series machines (EOSINT M 250, M 270, M 280) are the original predecessors, still supported with parts and service.
EOS Polymer 3D Printing Systems
EOS P 396
The EOS P 396 is the most popular EOS polymer platform and among the most traded SLS systems on the secondary market. It features a 340 x 340 x 600 mm build volume, optional dual CO2 lasers, and processes PA 12, PA 11, glass-filled nylon, TPU, and specialty materials.
EOS P 770 & P 500
The EOS P 770 is the largest EOS polymer system (700 x 380 x 580 mm, dual CO2 lasers) for large parts and high-throughput production. The EOS P 500 is the next-generation platform with automated material handling, reduced cooling times, and major productivity gains.
FORMIGA Series
The FORMIGA P 110 Velocis is a compact SLS system (200 x 250 x 330 mm) popular in dental, medical device, and prototyping applications. The legacy FORMIGA P 100 remains available on the used market.
Legacy EOS Polymer Systems
EOSINT P series machines (P 385, P 390, P 395, P 730, P 760) are earlier-generation polymer platforms using the same core SLS technology, still productive with material parameters and service available.
How to Sell Your Used EOS System
EOS systems hold strong resale value thanks to brand reputation, a large installed base, and demand for production-grade 3D printing.
Resell CNC buys used EOS systems, every model and generation, nationwide.
- Contact us at (844) 478-8181 or sales@resellcnc.com.
- Free appraisal within 24 hours, no obligation.
- Accept the offer and we handle rigging, transport, and logistics.

Frequently Asked Questions About Used EOS Systems
Are used EOS 3D printing systems reliable?
Yes. EOS systems deliver consistent results over thousands of build hours. Three decades of AM expertise, German engineering, and a global service network ensure long-term reliability.
What software do EOS systems use?
EOSPRINT handles build preparation (part orientation, supports, laser parameters) and EOSTATE provides process monitoring, both on proprietary EOS control software. When buying used, confirm all licenses transfer and the installed version supports your required materials.
What should I inspect before buying a used EOS?
Prioritize laser hours and power output, optical system condition, recoater wear, build chamber cleanliness, gas system integrity (metal) or heating uniformity (polymer), and software license status. Request calibration records and sample build data when available.
What EOS models hold their value best?
The EOS M 290 holds the strongest resale value among metal systems. The P 396 leads polymer platforms. Multi-laser systems (M 300-4, M 400-4) and current FORMIGA models also retain value well. Call (844) 478-8181 for current valuations.
What is the difference between EOSINT and current EOS models?
EOSINT was the original branding for EOS industrial systems. The EOSINT M 270 became the EOS M 270, and the EOSINT P 390 became the basis for the EOS P 396, reflecting engineering improvements in optics, software, and process control.
What materials can EOS systems process?
Metal systems process titanium (Ti64), aluminum (AlSi10Mg), stainless steel (316L, 17-4PH), maraging steel, cobalt chrome, nickel alloys (IN625, IN718), copper, and tool steels. Polymer systems process PA 12, PA 11, glass-filled nylon, TPU, polypropylene, and PEEK on select platforms.
Does Resell CNC offer financing on used EOS systems?
Yes. Resell CNC offers flexible financing options to help your business acquire the equipment it needs. Contact us at (844) 478-8181 to discuss terms.
How do I sell my used EOS system?
Contact Resell CNC at (844) 478-8181 or sales@resellcnc.com. We buy every EOS model, from current M and P series through legacy EOSINT and FORMIGA. Free appraisal within 24 hours.