Premium High-Performance Carbon Fibre Square Bar - Unidirectional Pultruded Construction for Superior Strength and Versatility

This premium high-performance carbon fibre square bar is manufactured using unidirectional pultruded construction to deliver exceptional strength, rigidity and dimensional stability. Designed for demanding engineering and structural applications, it offers an outstanding strength-to-weight ratio, making it an ideal alternative to metal where weight saving is critical.

Available in a range of compact, precise square profiles and lengths, this carbon fibre bar is suitable for use in robotics, UAV builds, frames, jigs, supports and performance hobby projects. Its clean, straight form and consistent wall properties make it easy to integrate into new designs or retrofit into existing assemblies.

Product Features

• Unidirectional pultruded carbon fibre construction for high longitudinal strength and stiffness.
• Multiple square dimensions: 4 x 4 mm (pack of 3), 5 x 5 mm (pack of 2), 6 x 6 mm, 8 x 8 mm and 10 x 10 mm cross-sections.
• Available lengths of 1000 mm and 2000 mm to suit both compact and extended structural runs.
• Lightweight carbon fibre composite offering excellent strength-to-weight ratio versus aluminium and steel.
• Precisely formed square profile for accurate alignment, easy fixturing and clean right-angle joints.
• Smooth, resin-rich surface suitable for bonding, machining, cutting and secondary finishing.
• Corrosion-resistant and non-conductive in most environments, ideal for use in challenging conditions.

Key Features and Benefits

• High stiffness and strength along the length of the bar help minimise flex and deflection under load.
• Low weight allows you to reduce overall system mass, improving performance and efficiency in moving assemblies.
• Choice of square sizes and pack formats offers flexibility for both one-off prototypes and small production runs.
• Excellent dimensional stability and straightness support precise assemblies and repeatable engineering results.
• Good fatigue and impact resistance contribute to longer service life in dynamic and vibration-prone applications.
• Easy to cut and drill with appropriate tools, enabling straightforward customisation on-site or in the workshop.

Specifications

Applications and Ideal Uses

This carbon fibre square bar is suited to a wide variety of technical, industrial and hobbyist projects where high strength, low weight and precision are required.

• Lightweight frames and arms for drones, UAVs and robotics projects.
• Structural members, braces and supports in performance engineering assemblies.
• Precision jigs, fixtures and test rigs in workshops and laboratories.
• Reinforcement elements in composite panels, model building and RC applications.
• Custom brackets, spacers and load-bearing components in automotive and marine projects.

Frequently Asked Questions

Can I cut the carbon fibre square bar to a custom length?

Yes, the bar can be cut to size using suitable tools such as a fine-toothed hacksaw or abrasive cutting disc. For best results, use dust extraction, wear appropriate personal protective equipment and support the bar securely to minimise splintering.

Is the carbon fibre square bar suitable for outdoor or damp environments?

Carbon fibre composite is inherently corrosion-resistant and generally performs well in outdoor and damp environments. However, for prolonged exposure, especially in harsh conditions, sealing cut ends and drilled holes with resin or varnish is recommended to protect the fibres and maintain appearance.

How can I fix or join the carbon fibre square bar to other components?

The bar can be joined using structural adhesives designed for composites, or with mechanical fixings such as clamps, brackets or carefully drilled bolted joints. When drilling, use sharp bits, avoid excessive pressure and support the bar to reduce the risk of delamination.