How to Mix Epoxy Glue Properly: A Clear Step-by-Step Guide

Are you looking to bond materials together with a strong adhesive? If so, epoxy glue might be a suitable choice. This versatile adhesive is commonly used in the workshop, but many people struggle with mixing it correctly. In this piece, we will explore the query of “How to mix epoxy glue” and provide an effortless guide on how to get it right. Follow these steps for ideal results and you’ll be sure to be a pro!

To mix epoxy glue, you’ll need to follow these simple steps:

  • Measure out equal amounts of the two components
  • Thoroughly mix the components together, ensuring to scrape the sides and bottom of the container.
  • Allow the mixture a few minutes to settle and any air bubbles to ascend toward the surface.
  • Apply the epoxy to the materials you want to bond together
  • Wait for the epoxy to dry completely before using the bonded materials

If you yearn for a more in-depth look into the blending process and other advice for incorporating epoxy glue in your workshop, continue reading this article.

Here, you will uncover everything essential to maximize this adhesive’s potential and establish robust connections between materials. Whether a professional craftsman or DIY enthusiast, mastering how to mix epoxy glue is an indispensable ability to have at your disposal. So, let us begin our exploration and gain greater comprehension!


Contrary to what many claim, epoxy glue is not useful when building projects for the kitchen or that come into contact with food. That is why it is recommended to take a look at my article Is epoxy glue food safe? Separating Fact from Fiction where I go much deeper into this topic. Take care of your health and start reading this article now.

Disclosure: At zero cost to you, I may get commissions for purchases made through links in this post. I earn from qualifying purchases as an Amazon associate. Products featured are selected based on quality, performance, and reputation, regardless of affiliate relationships.

The Art of Mixing Epoxy Glue

What is Epoxy Glue?

This two-part adhesive is composed of an epoxy resin and a hardener, creating a powerful bond. When mixed in the correct ratio, it cures into a strong and durable bond that can withstand high-stress levels.

Epoxy glue has a wide range of applications, from repairing cracks in concrete to bonding metals and plastics. The remarkable versatility of epoxy glue is one of its most noteworthy advantages.

This product is an excellent choice for a variety of surfaces, including concrete, wood, metal, ceramic and glass. With simple application and incredible versatility, it is the ultimate solution for any project. Additionally, it has excellent resistance to water and chemicals which makes it ideal for use in marine and automotive industries.

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The importance of properly mixing epoxy glue

Mixing epoxy resins and hardener is crucial to ensure its effectiveness. The ratio between the epoxy resin and hardener must be exact; otherwise, the mixture will not cure properly. Mixing the components of your bond ineffectually or too hastily with excessive force can create air bubbles, thus significantly reducing its strength. Be wary and take special care not to exacerbate this risk.

The proper resin mixing technique will ensure that every particle of epoxy resin links up with a particle of hardener so that when dry or cured all areas are bonded correctly with no weak spots within your project.

Without this balance between resin and hardener in your mixture your project could fail – leading to weaker structural integrity over time or complete failure which would be devastating especially if it were on something like a boat during operation at sea!

Materials Needed

Before mixing resin, you’ll need to gather all the necessary materials. Here’s a list of what you’ll need:

Epoxy Resin and Hardener

The base of epoxy glue is made up of two parts: resin and hardener. For any given project, the ideal resin and hardener combination will depend upon your specific requirements.

Be sure to peruse the labels with precision, selecting the suitable duo for your intended purpose. Also, make sure you use fresh epoxy glue.

Mixing Container

You’ll need a container to mix the resin and hardener together. Find a vessel capacious enough to accommodate your needed quantity of glue, yet not so expansive that stirring becomes an arduous task.

It’s important to use a container made from a material that won’t react with the epoxy mixture, so avoid using any plastic or paper containers.

How to Mix Epoxy Glue Properly - I always use a few pieces of painters tape on the workbench to mix my epoxy glue on
I always use a few pieces of painters tape on the workbench to mix my epoxy glue on

Another thing you can do, and what I always use, is a few pieces of painters tape on the workbench. It helps to check that the adhesive has fully cured and then the tape can be easily removed and disposed of. Easy, fast, and cheap!

Stir Stick or Paddle

A stir stick or paddle is essential for mixing epoxy glue properly. Look for one made from a material that won’t react with the mixture, such as plastic or wood. Avoid metal stir sticks, as they can potentially cause a chemical reaction with the epoxy.

How to Mix Epoxy Glue Properly - I use a plastic spoon to mix epoxy glue
I use a plastic spoon to mix epoxy glue

If you’ve watched my YouTube videos, you’ll have noticed that I use a plastic spoon to mix epoxy glue. After all these years of trying different things this works best for me. The plastic spoon is smooth, making it easy to clean afterwards, even when the glue has hardened.

Protective Gear

Protect yourself while working with epoxy glue by wearing gloves, safety glasses, long sleeves/pants, and even an apron for any potential spills or splatters. Now that all materials are gathered, prepare your workspace before you mix the epoxy glue.

Surface Preparation

Prior to mixing epoxy resin and hardener, ensure your workspace is clean and dry for optimal results. Any dust or debris on your surface can mix with the epoxy and ruin your project.

Take a few moments to carefully clean your workspace with a damp cloth, allowing it ample time to air dry before beginning. Don protective gloves, safety glasses, and an apron for added security.

To prevent epoxy glue from getting onto your skin or clothing, take precautions while handling it. For those working with considerable amounts of epoxy or in a space without sufficient ventilation, a respirator mask is advised.

If you’re working on a project that requires precision or intricate details, consider setting up additional lighting or magnifying tools. This will help you see any imperfections on the surface as well as bubbles that can form while mixing.

Another tip is to plan ahead for any potential messes by placing newspaper or plastic sheeting under your workspace. This will make clean-up easier if any spills occur while mixing the epoxy glue.

While preparing the workspace may seem like an extra step in the process, taking these measures will save time and frustration down the line. A clean workspace will produce better results and help prevent any unnecessary accidents during the mixing process.

How to Mix Epoxy Glue

Get the Mixing Ratio Right

Preparing epoxy glue is surprisingly straightforward, as long as the ratio is precise. In general, epoxy glues require a 1:1 mixing ratio of resin to hardener – equal parts of each. Before commencing, make sure you read the instructions carefully and measure out both components accurately.

Failure to get the ratio correct could lead to improper curing or a weak bond. When measuring out your components, consider using disposable mixing cups or large containers that are marked with volume measurements for easy and accurate mixing.

Mix only enough glue that you can use within the recommended time frame specified by the manufacturer. However, try to avoid mixing large amounts of glue. If you combine too many ingredients simultaneously, it may be set before you have a chance to consume the entirety.

Stir Like a Pro

Once you have your components measured out properly, it’s time to start stirring them together. Use a clean stir stick and start slowly at first to avoid creating bubbles in the mixture. Gradually increase your speed until both components are fully mixed together.

Be sure to scrape the sides and bottom of your mixing container frequently while stirring to ensure that all parts of the mixture are evenly combined.

Mixing too vigorously or too quickly can cause air bubbles in your glue which can weaken its strength when cured.

Avoid Common Mistakes

While mixing epoxy glue is straightforward, there are some common mistakes people make that can be easily avoided with proper care and attention. One common mistake is not getting the ratio right between resin and hardener – this can lead to incomplete curing or an unstable bond. Another mistake is not stirring thoroughly enough – any unmixed parts of the glue will result in weak spots in your bond.

Be sure not to mix more than you need – leftover glue will eventually start to cure and become unusable. By following these expert hints, you will be well-equipped to mix epoxy glue like an experienced professional.

Applying Epoxy Glue

Now that you have combined the epoxy glue perfectly, it’s time to coat it onto the surface. Depending on your project and personal preference, you can either brush or pour the epoxy glue. Let’s take a closer look at each method:

Brushing Epoxy Glue

If you need to apply epoxy glue onto a small or intricate surface area, using a brush is the way to go. To reduce the risk of drips and spills, ensure that your work area is even and perfectly leveled. Then, using a disposable foam brush or silicone brush, gently dip it into the mixture and apply it onto the surface in thin layers.

It’s important to note that brushing too vigorously can introduce air bubbles into the mixture, which will affect not only how smooth the finish looks but also its strength. Gently stroking your brush back and forth in a single direction along the grain of the object’s surface can yield excellent results.

Pouring Epoxy Glue

If your project involves covering larger areas such as countertops or tabletops, pouring may be more efficient than brushing. This method requires a steady hand because pouring too quickly can lead to uneven coverage and result in an unattractive finish.

You will need a mixing container with higher walls than what was used for mixing so that when pouring there isn’t any spillage on nearby surfaces.

To get started, slowly pour small amounts of mixed epoxy glue onto your work surface until it covers all areas evenly.

Tips on How to Mix Epoxy Glue for Achieving A Smooth Finish

No matter which application method you choose, achieving a smooth finish should be one of your top priorities! To implement this effectively, consider the following tips:

  • Eradicate any air bubbles on the surface by heating it with a blowtorch or heat gun, particularly useful for horizontally-laid tabletops.
  • Work in small sections. Epoxy glue has a limited working time before it begins to harden, so don’t try to cover too large of an area at once.
  • After you’ve applied the epoxy glue, use a plastic scraper or squeegee to spread it evenly and remove any excess mixture from the surface.

By following these tips and tricks, you can effortlessly apply epoxy glue onto any surface with a perfect, seamless result!

Curing Time

The Science Behind Curing Epoxy Glue

You’ve mixed your epoxy glue, applied it to your project, and now you’re waiting for it to cure. But how long does that take exactly? The setting duration of epoxy glue is subject to numerous influencing variables including temperature, humidity, and the relation between resin and hardener.

Epoxy glue cures through a chemical reaction between the resin and hardener. The mixture releases heat during this reaction, which helps speed up the curing process.

However, fluctuating temperatures can impact the curing time of epoxy glue. As a general guideline, lower ambient temperatures can elongate the curing period while higher ones accelerate it.

Factors That Affect Curing Time

Humidity also plays a role in curing time. High humidity levels can cause moisture to accumulate on the surface of an epoxy-coated object which can lead to a cloudy appearance known as “blushing”.

This can also slow down the curing process or even prevent it altogether. The amount of resin and hardener used also affects curing time because a larger mixture will generate more heat during the chemical reaction which causes faster curing times compared to smaller mixtures.

To know all the detail to epoxy glue curing time, go to my article How Long Does Epoxy Glue Need to Dry: a Comprehensive Guide to see more.

When Is It Safe To Handle or Use The Glued Item?

It’s important not to handle or use an item that has been glued until it has fully cured. The curing time of epoxy glue varies according to environmental temperature and humidity levels, ranging from a few hours to several days in order to achieve its full adhesive strength.

To determine if your project has fully cured, you can perform a simple tack test by lightly touching the surface with your finger – if there is no tackiness or residue left behind after touching then it should be safe for handling or further use.

In general, though, waiting at least 24 hours before handling or using your glued item is recommended to ensure that it has reached maximum strength. Remember, patience is key when working with epoxy glue and rushing the curing process can lead to problems down the line.


The Importance of Properly Cleaning Epoxy Glue

Cleaning up after using epoxy glue is a critical step in the process. Organizing your workspace not only helps maintain tidiness, but it also guarantees that you can reuse your tools and materials down the line.

When left to dry on surfaces, epoxy glue can be difficult to remove, so it’s important to clean up any spills or excess glue immediately.

Disposing of Leftover Mixture

When disposing of leftover epoxy glue mixture, it’s important to follow local regulations for chemical waste disposal. Check with your city or county government for specific instructions on how to dispose of the leftover mixture safely. In general, you must ensure that the mixture has cured thoroughly before discarding it in the trash.

Cleaning Tools

Cleaning tools used for mixing and applying epoxy glue is relatively easy if done immediately after use. First, remove any excess glue using a paper towel or fabric.

Then, rinse the tools with warm water and soap while using a scrub brush to remove any remaining residue. Rinse thoroughly and dry completely before storing them away.


Mixing epoxy may seem intimidating, but with the appropriate instructions and methods, it can be a straightforward process. By adhering to the steps delineated above, you can blend epoxy glue expertly and secure strong and enduring bonds for your projects.

Safeguard yourself by wearing protective gloves and operating in a well-ventilated area, and be sure to precisely measure and mix the two components of the epoxy glue.

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