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An ULTEM™ Filament capable large format 3D printer for big, strong, high temp parts — usable from factory floor to flight.

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The FX20 brings the Digital Forge and Continuous Fiber Reinforcement to a new realm of parts, problems, and industries.

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Test Drive FX20

FX20 is our biggest, most capable printer yet. Experience it yourself in our virtual tour.

FX20 Virtual Tour

Massive Builds, Faster

The FX20 pairs size and throughput to make larger builds at incredible speeds, delivering the transformational benefits of The Digital Forge at a new scale.

Flight-Ready Functional Parts

Built for everything from performance tooling and fixtures to flight-ready production parts — this large format 3D printer can reinforce ULTEM™ 9085 Filament with continuous carbon fiber.

Production-Ready Performance

A precision-designed, sensor-driven production 3D printer delivers breakthrough reliability and performance with a simple user experience.

The biggest, hottest, and most sophisticated 3D printer we’ve ever built.

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State-of-the-art hardware, electronics and software ensure a smooth user experience.

Physical Dimensions

Width 1325 mm
Depth 900 mm
Height 1925 mm
Weight 530 kg / 1170 lbs

Build Volume

Width 525 mm
Depth 400 mm
Height 400 mm

Printer primary Specs

Printing Process
Fused Filament Fabrication, Continuous Fiber Reinforcement
Z Layer Resolution
50 μm - 250 μm
Printing Media
Polymer Filament, Continuous Fibers
Internal Part Geometry
Closed Cell Infill with Continuous Fiber Reinforcement
Print Bed
Precision Machined Aluminum

System Details

About the FX20

The FX20 is the largest and most precise machine Markforged has ever produced.

This large format 3D printer features an 84L heated build chamber and massive, verified-flat vacuum bed with print sheets. The motion control system offers closed loop control through precision linear encoders, and is tuned to move the 3kg print head rapidly and accurately. FX20’s turbo mode builds parts faster than any Markforged machine, while new XL spools offer four times the material without spool changeover.

The FX20 is remarkably easy to use. It features a 7 inch touchscreen from which users can control every aspect of the printer. Automated calibration and leveling reduces operator input, while a wide variety of sensors give live feedback on machine performance. A material bay contains two active XL spools and can store two more with precise moisture control.

Continuous Fiber Reinforcement, now with ULTEM™ 9085 Filament.

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FX20 Materials


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ULTEM™ 9085 Filament

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Onyx FR

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Onyx ESD*

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Continuous Carbon Fiber

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Continuous Carbon Fiber FR

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Continuous Fiberglass*

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Continuous Aramid Fiber (Kevlar®)*

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*Material not yet compatible with FX20. Support for Markforged plastic and fiber materials will be added over time, although not every combination.

The “ULTEM™ and 9085 trademarks are used under license from SABIC, its affiliates or subsidiaries.

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Composite 3D Printing Process

3D Printing Software Meets Production Management

Eiger is Markforged’s do-it-all solution for building your additive toolchain. Collaborate on parts across teams and kick-off prints globally on a simple to use, continuously improving platform.