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If you want to 3D print tools and parts with the strength of metal - or even in metal - Markforged is just the ticket. Their range of composite 3D printers print in Onyx or nylon with the ability to add carbon fibre, fibreglass, or Kevlar reinforcement. The result is parts with exceptional strength. Or print in metal with the Metal X, which uses metal powder to 3D print parts in titanium, tool steel and other metals.

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Onyx One

Affordable, Industrial-Grade 3D Printing with Carbon Fibre

Availability: In stock

3995 £3,995.00
  • £4794.00 INC. VAT
  • £3995.00 EX. VAT


Create beautiful, functional carbon fibre parts with no post processing needed. Create strong parts in a matter of hours, at an affordable price point.


  • Volume: 320 mm x 132 mm x 154 mm build volume;
  • Strength: 3D print strong, wear resistant tools and parts;
  • Precision: Print with outstanding precision and accuracy;
  • Flawless: Create stunning, matte black parts with Onyx filament.


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Layer Height
100 microns (0.1 mm)
Build Dimensions
320 mm x 132 mm x 154 mm
Manufacturer SKU
WiFi, USB Stick, Ethernet Cable
Composite Filament Fabrication (CFF) ™
Eiger (Free Trial)


The Markforged Onyx One is the most affordable 3D printer Markforged has ever made, but it’s equally as capable as 3D printers that cost ten times more. With the ability to print with Onyx filament - a nylon and chopped carbon fibre mashup, you can 3D print industrial-strength parts and consumer-facing casings and products, with pinpoint accuracy and outstanding dimensional accuracy. And best of all, the Onyx One 3D printer has a roomy 320 mm x 132 mm x 154 mm build volume, with access to cloud Eiger software.

Desktop Print Farm

Designed for Engineers

The Onyx One 3D printer has been designed from the ground up to 3D print carbon fibre, which is an incredibly abrasive material. Carbon fibre wears down brass nozzles very quickly, so it can’t be printed consistently with a regular 3D printer. No other 3D printer on the market has been designed with the sole intention to print carbon fibre. Engineers can use their Onyx One 3D printer to create parts that are dependable and robust, for a wide variety of applications, from robotic tooling to consumer electronics.

ABS Strength Comparison

Crucially, parts printed with Onyx have a perfect matte finish fresh from the print bed, so they can go straight to work, with no post-processing necessary.


Print Products with an Outstanding Finish

The mineral black onyx is well-known for its surface finish, and that’s why Onyx filament has been named as such. It doesn’t actually contain any onyx mineral, but parts that are 3D printed with Onyx filament are flawless, with excellent hardness and stiffness. And, since Onyx is part nylon and part chopped carbon fibre, you get the stiffness and resilience of carbon fibre, and the engineering toughness and wear resistance of nylon. Onyx filament also has excellent dimensional stability, meaning you can 3D print parts that are true to your CAD design, without having to worry about warping or splitting.

Onyx Intake Print

As the entry point to the Markforged 3D printer range, the Onyx One offers all engineers a truly fantastic opportunity to step into the wonderful world of 3D printing. 

What People Say

“Due to the robustness of the build quality and some fine engineering work, once you’ve worked through the bed levelling process, you can pretty much leave it alone. We’ve not relevelled the machine in our office in about three months since installation”
– Al Dean, Develop3D

“Onyx is strong enough and flexible enough in the Z direction to actually allow for 3D printed springs, both for extension and compression.”
– Alex Crease, Markforged

“Onyx is one of my favourite materials because it combines stronger composite material with the chemical resistivity of nylon”
– J.R.Everett, Dixon Valve

What's in the box?

Onyx One 3D printer
Eiger Software (cloud based)
800cm³ spool of Onyx
Dry box
3 x FFF quick change nozzles
1 x True bed build plate

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For prototype to end-use, Markforged leads the way. Their industrial 3D printers for manufacturing shops and factory floors empower manufacturers and engineers to create strong, real working parts in just a day or two. Compared to subtractive manufacturing processes like machining, the Markforged alternative is state-of-the-art. And it works. Make no mistake, these are best-in-breed 3D printers.

The range kicks off with the Desktop series. It includes the Mark Two which prints Onyx, carbon fibre, fibreglass, nylon, Kevlar, and high-temp fibreglass. There’s also the Onyx One which prints Onyx, and the Onyx Pro which prints Onyx and fibreglass. These machines are desktop and user-friendly and immensely capable.

The Industrial series kicks things up a notch. The Markforged X7, X5, and X3 are for factory floors. The X7 is the pick of the bunch printing the same materials as the Mark Two, but with an enhanced build volume and footprint.

The Metal X is another beast entirely. It empowers engineers to manufacture parts with complex geometries and details that would be impossible with subtractive manufacturing. It can directly replace many of these traditional processes. The Metal X uses metal powder to create true-to-design parts. Parts are then sintered in a furnace to become solid, afterwards demonstrating the same strength and durability as cast parts.