How do you make epoxy glue stronger?

There are a few ways to make epoxy glue stronger:

1. Proper surface preparation: Ensure that the surfaces to be bonded are clean, dry, and free from any contaminants such as dust, grease, or oil. Use a degreaser or rubbing alcohol to clean the surfaces thoroughly before applying the epoxy.

2. Mixing ratio: Follow the manufacturer's instructions carefully and mix the epoxy resin and hardener in the correct ratio. An improper ratio can result in a weaker bond.

3. Apply pressure: Apply pressure to the glued surfaces while the epoxy cures. This can be done using clamps, weights, or any other method that keeps the surfaces tightly pressed together. Applying pressure helps to eliminate any air bubbles and ensures maximum contact between the adhesive and the surfaces.

4. Cure time: Allow the epoxy to cure for the recommended duration. This typically ranges from a few hours to a few days, depending on the specific epoxy product. Avoid moving or stressing the bonded surfaces during the curing process.

5. Temperature and humidity: Epoxy cures best under specific temperature and humidity conditions. Ensure that the curing environment is within the recommended range specified by the manufacturer. Extreme temperatures or high humidity can affect the strength and curing time of the epoxy.

6. Reinforcement: For added strength, consider reinforcing the epoxy bond with other materials such as fiberglass cloth, carbon fiber, or metal mesh. This can significantly increase the overall strength of the bond.

It's important to note that the strength of epoxy glue is primarily determined by the specific product used and its intended applications. Therefore, it is always advisable to carefully read and follow the manufacturer's instructions for the best results.