Whether you are a seasoned composite technician or an ambitious DIY enthusiast, understanding exactly how much resin you need for every 100g of carbon fibre is essential for achieving durable, lightweight, and visually impressive results. This page guides you through comparing suitable resin options, key mixing ratios, and product considerations to ensure optimal impregnation and structural performance for your project.

Resin-to-Carbon Fibre Ratios: Key Differences and Guidelines

The bond between carbon fibre and resin underpins the final strength, finish, and longevity of your composite component or artwork. Typically, for hand layup and vacuum bagging methods, a resin-to-fibre weight ratio between 1:1 and 1.2:1 is recommended—meaning you would require 100g–120g of resin per 100g of carbon fibre. This range ensures proper wetting of the fibres while keeping weight minimal, avoiding excess resin that can weaken or make parts brittle.

Epoxy resins designed specifically for technical fabrics such as carbon fibre stand out for their ease of impregnation, low bubble formation, and mechanical resilience. When comparing available options, key product distinctions include clarity, cure speed, viscosity, and suitability for both creative and industrial disciplines. Below you will find the characteristics and best uses of each leading ResinPro product for carbon fibre applications.

Visual Guide to Resin Application and Fibre Impregnation

View typical resin application techniques and finished carbon fibre composites achieved with epoxy resins. Notice the even fibre saturation and minimal air pocket formation that result in optimum structural strength and surface finish.

“Carbon Resin” – Epoxy Resin for Carbon Fiber & Fiberglass Coating

“Carbon Resin” – Epoxy Resin for Carbon Fiber & Fiberglass Coating is expertly crafted to maximise strength, integrity, and finish when working with carbon fibre and fibreglass. Its advanced formula delivers high impact resistance and easy application, allowing for glossy, professional finish without bubbles at room temperature curing. It is especially recommended for demanding technical and structural applications.

This resin ensures precise wetting of every fibre, helping to maintain correct resin usage—typically just above a 1:1 weight ratio for robust, bubble-minimised laminates. Ideal for professional makers and advanced DIYers, it is the first choice when performance and ease are both required.

“Trasparente” Epoxy Resin Kit 800g + Mica Powder 10g – 10 Colour Variations

The “Trasparente” Epoxy Resin Kit 800g + Mica Powder 10g – 10 Colour Variations offers a multipurpose, ultra-clear solution well-suited for artistic, restoration, and light industrial applications, including impregnating carbon fibre fabrics. The kit includes user-friendly mixing tools and detailed instructions, making it appropriate if you want both superior transparency and a small project-friendly pack size.

This kit is designed around simple measurement and application, following the recommended resin-to-fibre weight ratio. Thanks to its high-flow characteristics, it allows the resin to saturate every strand of fibre without excessive use, maintaining the structural and lightweight advantages of your composite.

“Trasparente” – Multipurpose Clear Epoxy Resin for Casting – Up to 2cm

“Trasparente” – Multipurpose Clear Epoxy Resin for Casting – Up to 2cm offers a crystal-clear, self-levelling finish, highly valued in decorative casting as well as in functional technical fabric projects. It supports up to 2cm layer thickness while still ensuring proper carbon fibre impregnation, with a ultra-clear formula and high scratch resistance for lasting aesthetics and performance.

Its low viscosity and included tools help you get consistent mixing and even coverage, resulting in a lightweight, strong composite. This resin meets the balance of perfect fibre wetting and visual clarity for projects prioritising both mechanics and appearance.

“Icrystal” – Clear Epoxy Resin – Odourless Formula – Up to 1.5cm

The “Icrystal” – Clear Epoxy Resin – Odourless Formula – Up to 1.5cm is ideal when a transparent and odour-free working environment is paramount. Suitable for coatings and casting up to 1.5cm thickness per layer, it delivers a crystal clear finish with high transparency while maintaining a user-friendly 2:1 mixing ratio for ease of use.

When used for carbon fibre, its formula ensures sufficient wetting with minimal bubble formation, allowing efficient use of resin as specified by the material ratio guidelines. Perfect for both artistic and DIY makers seeking clarity and comfort.

Tips for Mixing, Measuring, and Applying Resin to Carbon Fibre

Accurately measuring both the resin and carbon fibre before mixing is crucial. Aim for an even spread—too little resin leads to dry spots and compromised strength, while too much can create a brittle or heavy part. Always pre-mix resin according to the manufacturer’s specified ratio by weight, and use a brush or roller to work the resin thoroughly into the fibre. Use scales and graduated containers for best consistency from batch to batch.

For large surface areas or intricate shapes, consider staging your applications to prevent exothermic peaks and bubbled finishes. Use products specifically labelled for both room temperature cure and compatibility with technical fabrics. Check the working times and plan your workflow to allow for bubble release and self-levelling actions, especially with multipurpose or clear casting epoxies.

Mixing and Measurement in Action

See demonstrations of careful resin measurement, mixing process, and wet-out on carbon fibre fabrics. Each stage shown underscores the importance of accurate ratios and thorough wetting for lasting results.