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How to Repair a Hockey Stick Using Epoxy and Carbon Fiber


Broken hockey stick? Don’t throw it away just yet. With the right materials and method, you can restore cracked or split hockey sticks – whether it’s the shaft or the blade – using carbon fiber and a high-quality epoxy. A well-executed composite repair can return your stick to near-original strength, letting you get back on the ice without needing a replacement. In this guide, we’ll walk you through a reliable repair method using carbon fiber sleeves and epoxy resin, focusing on restoring durability and keeping the stick’s flex and feel as close to the original as possible.

The goal of repairing a hockey stick is to bring it as close as possible to its original structural integrity and performance. This means reinforcing the damaged shaft wall itself, rather than simply filling the inside with hardened, unreinforced epoxy. Epoxy on its own becomes brittle and can’t handle the same level of stress as a properly reinforced carbon fiber repair. If you must use epoxy as a filler, the plug should be as small as possible.

The best and most durable method is to use a carbon fiber sleeve pre-wetted with epoxy, then tightly compressed against the shaft wall. The carbon fiber acts as the reinforcement (the structural strength), and the epoxy bonds and strengthens it. Before applying the fiber, sand the repair area to create a rough surface and clean it thoroughly with acetone. When carbon fiber is properly saturated with epoxy, it creates a strong, load-bearing structure. If left dry, the fabric does nothing.

While the ideal resin-to-fiber ratio is around 50/50 by weight, in practice for repairs, it's recommended to use slightly more resin - around 60–70% to ensure complete saturation. For example, 200 g/m² carbon fiber creates a layer approximately 0.2–0.3 mm thick, and 400 g/m² fabric gives you a thickness of about 0.4–0.6 mm.

You can improve epoxy flow by slightly warming the resin. Just a 5°C increase can significantly improve workability and fiber wetting but also speeds up the curing process. There's always a trade-off between flexibility and strength in epoxy. A high-quality resin like Ampro is designed to offer both: it withstands over 6% elongation at break, which makes it suitable for use even in the production of new sticks. Avoid overly flexible epoxies, as they reduce stiffness and could make the repaired area feel softer than the rest of the shaft - something you want to avoid. Stick to standard, high-quality epoxy designed for composites.

After the repair, allow the epoxy to fully cure before using the stick. Even at room temperature, strength continues to improve over time. After just 24 hours, the bond is functional, but after two weeks, it becomes significantly stronger. For best results, a gentle post-cure at slightly elevated temperatures can further improve final strength.

If you pour epoxy in thick layers, the curing reaction can become too aggressive, generating excess heat. Even a 10 mm thick pour can be risky. For this reason, we recommend Ampro Epoxy, which is specially formulated for repairs. Ampro Fast is ideal for smaller jobs and is available in convenient pump kits.

A 1.3 kg pack is enough to repair several sticks - perfect for team use. Carbon fiber fabrics are available in wide rolls (125–127 cm) and lightweight weaves are ideal for hockey stick repairs.

Three things are particularly important for the success of the repair work. The area to be repaired should be sanded rough and cleaned with acetone. The correct amount of hardener must be measured into the epoxy resin and mixed thoroughly, scraping the bottom and sides of the container. Additionally, the temperature should be above +15 °C, preferably 18–20 °C, during the repair work. Finally, the carbon fiber fabric must be completely wetted and pressed firmly against the surface to be repaired to ensure the structure is durable and long-lasting.

Required Materials:


Step by step instructions

1. Preparation

  • Sand the cracked area roughly 10 cm in each direction from the damage. A rough surface helps the epoxy adhere properly.
  • Clean thoroughly with acetone to remove any dust or grease.

2. Cut the Carbon Fiber Sleeve

  • Cut the sleeve so it extends about 8–12 cm beyond the crack on both sides.
  • Choose the appropriate diameter: 25 mm fits most shafts, while 45 mm offers more room and flexibility during application.

3. Mix the Epoxy and Wet the Sleeve

  • Measure resin and hardener carefully (Ampro Fast mix ratio is 100:27 by weight).
  • Mix thoroughly, scraping both the bottom and sides of the container.
  • Wet out the carbon sleeve before or during application. Dry fiber won’t reinforce anything!

4. Apply the Sleeve

  • Place the saturated sleeve over the damaged area and ensure a tight fit.
  • Compress the sleeve firmly against the shaft using shrink wrap or tightly wound plastic film/tape. A little pressure helps remove excess resin and increases strength - too much epoxy can weaken the structure.
  • Let the epoxy cure undisturbed. Ampro Fast begins to harden within a few hours, but full strength develops over several days. For maximum durability, wait up to two weeks.

5. Finishing

  • Once fully cured, remove the compression wrap.
  • Sand and finish the surface if desired.

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