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Markforged makes industry-leading 3D printers for applications in engineering, manufacturing, product design and functional prototyping. Print metal, carbon fibre, high-temp fibreglass, fibreglass, Kevlar and more. Print parts, tools, and fixtures stronger than metal, or even in metal. The possibilities are endless, and the 3D printers are tried, tested and proven in industry. Quality is the Markforged difference. This is a brand you can rely on to deliver consistency every time.

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High Temp Fibreglass CFF Spool 50cm³
High Temp Fibreglass CFF Spool 50cm³

Markforged High Temp Fibreglass CFF Spool 50cm³


High Strength, High Temperature Fiberglass (HSHT) is twice as strong as Markforged’s standard Fibreglass CFF filament with a 30 per cent higher heat deflection temperature (140°C vs. 105°C).

It is also cheaper to buy than Carbon Fibre CFF, and it comes in at a price that’s not significantly more expensive than standard Fibreglass CFF, despite being a superior material.

HSHT Applications

High Strength, High Temperature Fiberglass is ideal for parts that will operate in a high temperature environment, such as near an exhaust system, however it can be used in cooler environments just as well. Its high-strength properties mean that it can replace your existing fibreglass parts for added strength. Nylon parts that are embedded with continuous strands of HSHT Fibreglass retain their strength in even the hottest environments.

What else do I need to know?

High Strength, High Temperature Fiberglass is a unique 3D printing material designed for applications where extreme temperature resistance and strength is required.

HSHT Fibreglass is available in 50cm³ and 150cm³ spools, please ensure your 3D printer is compatible before use. Using HSHT Fibreglass with a non-compatible 3D printer model will void your warranty with Markforged, so please don’t attempt it.

High Temp Fibreglass
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    Many 3D printers lay claim to being ‘industrial-grade’ but when you delve into their material list, rarely do you find anything more durable than nylon.

    That’s where Markforged 3D printers differ. In the case of the Desktop and Industrial series 3D printers, these use nylon or Onyx as the base material (Onyx is a proprietary filament made by Markforged, it’s part nylon, part chopped carbon fibre). You can then reinforce prints with continuous strands of a stronger composite - carbon fibre, fibreglass, or Kevlar - to create truly industrial-grade prototypes and end-use parts.

    For example, parts printed in carbon fibre are stronger than 6061-T6 aluminium. The Desktop series includes the Mark Two, Onyx One and Onyx Pro, and the Industrial series the X7, X5, and X3. There’s a printer for every application.

    Then there’s the Metal X, Markforged’s greatest machine yet. This 3D printer utilises a process called ADAM (Atomic Diffusion Additive Manufacturing) to print parts in powdered metal surrounded by a plastic support. The parts are then sintered in a furnace externally to become solid. This enables you to manufacture metal parts with geometries and details that would be impossible with subtractive manufacturing processes.