Our metal filaments combine the simplicity and safety of FFF printing with the superior properties of advanced metals, bringing metal 3D printing to your benchtop.


Composite Base filaments are engineering-grade materials that print using a conventional FFF (FDM-style) process. Print with them alone or with Continuous Fibers to yield strong parts. The ULTEM™ and 9085 trademarks are used under license from SABIC, its affiliates or subsidiaries.

Continuous Fibre

Continuous Fibres enable Markforged composite printers to print metal-strength parts. They cannot be used alone — however, when printed with a Composite Base, they form the backbone of a strong printed part.


HSHT Fibreglass

Thermally resistant Continuous Fibre for strong parts in high-temperature environments

High Strength High Temperature (HSHT) Fibreglass is defined by two characteristics: high strength (nearly equal to 6061-T6 Aluminum) and strength in high temperatures. Though not as stiff as Continuous Carbon Fibre, Onyx parts reinforced with HSHT are strong at both low and high temperatures. As a result, HSHT reinforcement is best used for parts in high-temperature environments like molds, autoclaves, and others.


Polymer Molds  /  Prototype (Low-Run) Injection Molds /  High-Temperature Fixturing /  High-Temperature Prototypes

Flexural Strength



HSHT Reinforced


Heat Deflection Temperature



HSHT Reinforced

HSHT Fibreglass

100 / 50cc