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Markforged 3D printers print composite-reinforced nylon parts that are as strong as 6061 aluminium. Parts are embedded with carbon fibre, fibreglass or Kevlar strands during the print process to create an end product suitable for industrial use. Discover the Markforged Mark One range below and call us on 01765 540 115 or email web@goprint3d.co.uk if you have any questions, and our team will be happy to help.

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Onyx One

Affordable, Industrial-Grade 3D Printing with Carbon Fibre
  • £4380.00 INC. VAT
  • £3650.00 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) ™


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

Product Downloads

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When Markforged launched the first ever 3D printer capable of printing carbon fibre, fibreglass and Kevlar back in 2014, the engineering space took notice. Never before had there been a way to print parts with the strength of 6061 aluminium. Fast-forward to today, and Markforged have brought us an even better machine than the Mark One in the Mark Two, which has the potential to transform your manufacturing processes overnight.

There are actually three versions of the Mark Two to choose from - the Standard (can print nylon, fibreglass and carbon fibre), the Professional (can print nylon, fibreglass, carbon fibre and Kevlar) and the Enterprise (can print nylon, fibreglass, carbon fibre, Kevlar and high-temp fibreglass). Markforged 3D printers boast two extruders; one dedicated to printing the core filament, nylon, and the other dedicated to printing composites.

Nylon parts are embedded with continuous strands of fibre reinforcement during the print process, and there’s a composite for virtually any application; carbon fibre has the highest strength-to-weight ratio and the highest thermal conductivity, Kevlar has the best abrasion resistance and highest impact resistance while fibreglass and high-temp fibreglass has the best strength-to-cost ratio. We have seen engineers replace their CNC and milling operations with Markforged 3D printers overnight. It is now possible to 3D print parts with the strength and resilience of aluminium - and all at a low cost too, thanks to Markforged.