Epoxy tumblers have gained a lot of popularity lately, and for a good reason. These tumblers are perfect for customizing and creating unique designs. However, when you’re working with epoxy, you may encounter a common problem – fish eyes. These pesky little bubbles can ruin the entire look of your tumbler, leaving you frustrated and disappointed.
But don’t worry, getting rid of fish eyes in epoxy tumblers is easier than you might think. In this article, we will provide you with tips and tricks to prevent and eliminate fish eyes in your epoxy tumblers, so you can create stunning designs without any interruptions.
Whether you’re a beginner or a seasoned pro, you’ll find valuable information in this article that will help you improve your epoxy tumbler-making skills. So, grab a cup of coffee, sit back, and keep reading to discover how you can get rid of fish eyes in epoxy tumblers.
Table of Contents
What are Fish Eyes?
Fish eyes are a common problem that can occur when working with epoxy. They are small, circular craters that form in the epoxy surface and can be frustrating for DIY enthusiasts and professionals alike. Fish eyes can occur during the mixing, pouring, or curing process and can be caused by a variety of factors.
One common cause of fish eyes is contamination, which can occur from dust, dirt, or even moisture in the air. Another cause is surface tension, which happens when the epoxy is unable to bond to the surface it’s applied to. Poor mixing of the epoxy, incorrect temperature, or humidity levels, can also lead to the formation of fish eyes.
Fish eyes not only look unsightly but they can also weaken the overall strength of the epoxy. Therefore, it’s important to address them as soon as they appear.
The good news is that fish eyes can be easily prevented and treated. With the right techniques, you can achieve a smooth, flawless epoxy surface for your tumbler or any other project.
Definition of Fish Eyes
When it comes to epoxy tumblers, you may have heard the term “fish eyes” before. But what exactly are fish eyes? Fish eyes refer to small circular craters or pits that form on the surface of the epoxy coating. They can be caused by a variety of factors, including surface contamination, inadequate mixing, and trapped air or moisture.
Fish eyes can be unsightly and can ruin the finish of your epoxy tumbler. They can also weaken the integrity of the coating, making it more prone to cracking or chipping. Understanding what fish eyes are and what causes them is essential for preventing and fixing them.
If you are new to the world of epoxy tumblers, fish eyes can be frustrating and confusing. However, with a little knowledge and some practice, you can easily prevent and fix fish eyes in your epoxy tumbler projects.
In the next sections, we will take a closer look at the causes of fish eyes and provide you with some tips and tricks for getting rid of them.
What Do Fish Eyes Look Like?
Fish eyes in an epoxy tumbler look like small craters or depressions that form on the surface of the epoxy. They are often circular and can range in size from a few millimeters to a few centimeters in diameter.
These small imperfections are not only unsightly, but they can also compromise the durability and functionality of your tumbler. Fish eyes can cause the epoxy to weaken and flake off over time, which can lead to the need for frequent repairs or replacements.
When you look closely, you can also notice that fish eyes have a slightly different texture than the rest of the epoxy surface. They are often rough or bumpy, and can even be discolored compared to the surrounding area.
If you spot any of these small imperfections on your epoxy tumbler, it’s important to take action to remove them as soon as possible to maintain the overall quality of your tumbler.
Why are Fish Eyes Formed in Epoxy Tumblers?
While epoxy tumblers are a popular choice for personalized drinkware, they can be frustrating when they develop unsightly fish eyes. Understanding why fish eyes form can help you prevent them in the future.
Contamination is the most common reason for fish eyes in epoxy. Dust, lint, and other small particles can stick to the tumbler surface, causing the epoxy to pull away and form a fisheye.
Inadequate Mixing of epoxy and hardener can also lead to fish eyes. Mixing the two components thoroughly and slowly can prevent air bubbles that cause fish eyes.
Humidity can cause moisture to form on the tumbler’s surface, leading to fish eyes. Avoid working in high humidity or on a rainy day.
Additionally, improper curing conditions can cause fish eyes. The temperature and humidity in your workspace can affect the curing process, so make sure to follow the epoxy manufacturer’s recommendations.
Finally, recoating too soon can also cause fish eyes. If you apply a new coat of epoxy before the first coat has fully cured, it can trap air and cause fish eyes.
Contaminants on the Tumbler Surface
Contaminants on the surface of the tumbler are a common cause of fish eyes. If the tumbler is not cleaned properly before applying the epoxy, there could be oil, dust, or other contaminants on the surface that will cause fish eyes. Make sure to clean the tumbler surface thoroughly and dry it before applying epoxy.
Even the natural oils from your skin can cause fish eyes on the surface of the tumbler. It is essential to wear gloves while handling the tumbler to prevent the oils from your skin from getting onto the surface of the tumbler. This will help to minimize the risk of fish eyes.
Silicone molds can also cause fish eyes on the tumbler surface. If the silicone mold you are using to hold the tumbler during the epoxy application is not clean, it can cause fish eyes. Be sure to clean the mold thoroughly before use.
Another factor that can cause fish eyes is humidity. High humidity levels can cause moisture to accumulate on the tumbler surface, which can cause fish eyes during the epoxy application process. It is best to avoid applying epoxy during humid weather conditions or in humid areas.
Moisture Trapped in the Epoxy Mixture
Moisture is another culprit that can lead to fish eyes in epoxy tumblers. If the tumbler surface is not clean and dry before applying the epoxy mixture, moisture can get trapped inside the mixture, causing bubbles and fish eyes.
The same can happen if the epoxy mixture itself has moisture in it. This can occur if the resin and hardener were not stored properly or if they are past their expiration date. Using old or improperly stored resin and hardener can result in moisture getting into the mixture and causing fish eyes.
If you live in a humid climate, you may also encounter issues with moisture in your epoxy. The humidity in the air can cause moisture to collect on surfaces, including your tumbler, even if it seems dry to the touch. This can lead to fish eyes in your finished product.
To avoid fish eyes caused by moisture, it is essential to ensure that both the tumbler surface and the epoxy mixture are completely dry before applying the epoxy. You can use a heat gun or torch to remove any moisture on the surface, and storing your resin and hardener correctly can help prevent moisture from getting into the mixture.
Inadequate Mixing of Epoxy Resin and Hardener
Chemical Reaction: Fish eyes can form if the epoxy resin and hardener are not mixed thoroughly. This can prevent the chemical reaction from occurring evenly, leading to uncured spots that cause fish eyes.
Measure Accurately: If you don’t measure the epoxy resin and hardener accurately, this can cause a chemical reaction imbalance leading to fish eyes. Use a digital scale to weigh the components and ensure the right mixing ratio.
Mix Thoroughly: Mix the epoxy resin and hardener thoroughly for at least 3-5 minutes. Use a mixing stick to scrape the sides and bottom of the mixing cup to ensure all the components are mixed uniformly.
To avoid fish eyes caused by inadequate mixing, be sure to follow the manufacturer’s instructions for mixing and measuring the epoxy resin and hardener, and take your time to ensure everything is thoroughly combined before applying the epoxy to your tumbler.
How to Prepare the Epoxy Mixture to Prevent Fish Eyes?
Measure the components accurately: One of the most common reasons for fish eyes is inadequate mixing of the epoxy resin and hardener. Make sure to measure the components accurately according to the manufacturer’s instructions.
Dehydrate the tumbler: Before coating the tumbler with epoxy, make sure it is completely dry and free from any moisture. Dehydrate it by using a heat gun or by placing it in a preheated oven at a low temperature for some time.
Remove any contaminants: Clean the tumbler surface thoroughly with a lint-free cloth and isopropyl alcohol to remove any contaminants, such as dust, oil, or fingerprints, that could cause fish eyes in the epoxy coating.
Mix the epoxy thoroughly: Mix the epoxy resin and hardener thoroughly for the recommended time to ensure that they are fully combined. Use a slow speed drill or stir stick to mix, and scrape the sides and bottom of the container frequently to ensure proper mixing.
By following these steps, you can prepare the epoxy mixture effectively to prevent fish eyes and ensure a smooth and flawless finish on your tumbler.
Clean and Dry the Tumbler Thoroughly
Step 1: Use a lint-free cloth or paper towel to wipe the tumbler’s surface, removing any dust or debris that may cause contamination.
Step 2: Ensure the tumbler is completely dry before applying the epoxy mixture. Even a small amount of moisture can cause fish eyes.
Step 3: Consider using a cleaning solution designed for removing any oils or residues from the surface, to ensure a clean and dry surface.
By properly cleaning and drying the tumbler before applying the epoxy mixture, you can significantly reduce the risk of fish eyes appearing in your finished product.
Mix Epoxy Resin and Hardener Slowly and Thoroughly
Measure accurately: Use a precise scale to measure the resin and hardener according to the manufacturer’s instructions.
Mix slowly: Pour the hardener into the resin slowly while stirring constantly. Stir in a circular motion, making sure to scrape the sides and bottom of the mixing container.
Scrape and remix: After a few minutes of mixing, scrape the sides and bottom of the container again and mix for an additional minute to ensure the resin and hardener are fully mixed.
Avoid introducing air: Try to avoid introducing air into the mixture as this can also cause fish eyes. Mix the epoxy in a warm, dry environment to minimize the risk of moisture being introduced into the mixture.
What Tools and Materials You Need to Get Rid of Fish Eyes?
If you have fish eyes on your epoxy tumbler, don’t worry; it’s fixable. Here are the tools and materials you need:
Isopropyl alcohol: This will help clean the surface of the tumbler before fixing the fish eyes. You’ll need a clean and dry surface to work on.
Butane torch: You can use a butane torch to remove the fish eyes. This will heat up the surface of the tumbler and remove the air pockets that cause fish eyes.
Silicone scraper: You can use a silicone scraper to scrape the surface of the tumbler to remove any remaining fish eyes. Make sure to scrape gently to avoid damaging the epoxy layer.
Heat Gun
A heat gun is a great tool for getting rid of fish eyes in epoxy tumblers. Fish eyes occur when there are air bubbles trapped in the epoxy mixture. By heating the surface of the tumbler with a heat gun, the air bubbles are popped, and the surface is smoothed out.
When using a heat gun, it’s important to use it on the lowest setting to avoid melting or distorting the epoxy. Hold the heat gun a few inches away from the tumbler surface and move it in a circular motion to evenly heat the surface.
After heating the surface with the heat gun, use a torch to remove any remaining bubbles. The heat gun and torch can be used in combination to achieve the best results.
How to Apply Heat to Eliminate Fish Eyes?
Step 1: Identify the location of the fish eyes on the tumbler surface.
Step 2: Hold the heat gun about 4 to 6 inches away from the affected area and turn it on.
Step 3: Move the heat gun back and forth over the area for about 10 to 15 seconds. Be sure not to hold the heat gun in one spot for too long as this can cause the epoxy to burn or discolor.
Step 4: Wait for the epoxy to cool and inspect the surface. If the fish eyes have disappeared, then the job is done. If not, repeat steps 2 and 3 until the fish eyes are gone.
Hold Heat Gun 6-8 Inches Away from the Tumbler Surface
When using a heat gun to eliminate fish eyes, it’s important to hold the gun 6-8 inches away from the tumbler surface. This will prevent the surface from becoming too hot and potentially causing damage to the tumbler. Holding the gun too close can also cause the epoxy to bubble or blister.
It’s best to use a heat gun with a low to medium setting, as using high heat can cause the epoxy to become too hot and potentially damage the tumbler or create new fish eyes. Keep the heat gun moving in a back-and-forth motion, making sure to cover the entire surface of the tumbler.
Be patient when using a heat gun, as it can take several minutes to fully eliminate fish eyes. It’s also important to wear protective gear, such as gloves and eye protection, when using a heat gun to avoid injury.
Move Heat Gun in a Circular Motion Over the Fish Eyes
Start Slowly: Begin by holding the heat gun 6-8 inches away from the tumbler surface and move it in a circular motion over the fish eyes.
Increase Temperature Gradually: Gradually increase the temperature of the heat gun until the fish eyes disappear. Keep the heat gun moving to prevent any damage to the epoxy resin.
Avoid Overheating: Do not overheat the tumbler or the epoxy resin may become damaged or discolored.
Allow Epoxy to Self-Level After Applying Heat
Once you have used the heat gun to eliminate the fish eyes, it’s important to let the epoxy self-level. This means that you should leave it alone and let it settle naturally without disturbing it.
While the epoxy is self-leveling, it’s important to keep it in a warm and dry environment. This will help it to cure properly and avoid any further issues with the surface of your tumbler.
It’s also important to avoid touching the surface of the epoxy during the self-leveling process. Touching it can cause additional imperfections and ruin the finish.
What Are Some Common Mistakes to Avoid?
Not Reading the Instructions: One of the biggest mistakes people make is not reading the instructions carefully. Epoxy resin can be tricky to work with, and each brand and type may have different instructions for mixing, application, and curing. It’s essential to read the instructions thoroughly before starting any project.
Rushing the Process: Another common mistake is rushing the process. Epoxy resin requires time to cure properly, and trying to rush it by using excessive heat or other methods can cause problems such as cracking, bubbling, or fisheyes. It’s crucial to follow the manufacturer’s recommended cure time and avoid rushing the process.
Not Mixing Properly: Proper mixing is crucial when working with epoxy resin. Not mixing the resin and hardener thoroughly enough can cause the epoxy to cure unevenly, leading to areas of softness or stickiness. It’s essential to mix the resin and hardener slowly and thoroughly according to the manufacturer’s instructions.
Using Low-Quality Materials: Using low-quality materials can also lead to problems with epoxy resin projects. For example, using a low-quality mixing cup or stir stick can introduce contaminants into the epoxy, leading to discoloration or other defects. It’s essential to use high-quality materials designed specifically for use with epoxy resin.
Overheating the Epoxy
Overheating the epoxy with the heat gun can cause more problems than it solves. If you overheat the epoxy, it can become brittle and prone to cracking. In addition, overheating can cause the epoxy to discolor or even burn, leaving behind unsightly marks.
To avoid this mistake, start by using the heat gun on its lowest setting and gradually increase the heat if necessary. Keep the heat gun moving in a circular motion to distribute the heat evenly, and avoid concentrating the heat on any one spot for too long.
If you notice the epoxy starting to smoke or bubble, stop immediately and allow it to cool before proceeding. It’s better to apply heat slowly and methodically than to risk damaging the epoxy with too much heat.
Using a Torch Instead of a Heat Gun
One common mistake is to use a propane torch instead of a heat gun. Although a torch can produce enough heat to remove fish eyes, it can also cause the epoxy to bubble, discolor or even catch fire.
Using a torch can also make it difficult to control the temperature of the epoxy, which can lead to overheating and cracking. Additionally, the flame from the torch can blow debris onto the surface of the tumbler, creating more imperfections that need to be fixed.
To avoid this mistake, always use a heat gun specifically designed for crafting and follow the manufacturer’s instructions for use.
Using a Low-Quality Epoxy Resin and Hardener
Quality of Epoxy Resin: Choosing a low-quality epoxy resin may result in several issues, such as air bubbles, yellowing, and cracking. Be sure to choose a high-quality epoxy resin to ensure a smooth finish.
Quality of Hardener: The quality of the hardener also plays a crucial role in the final finish of your tumbler. Using a low-quality hardener may lead to discoloration, yellowing, and brittleness. Always use a hardener recommended by the epoxy resin manufacturer.
Improper Mixing: Not mixing the epoxy resin and hardener in the correct ratio or not mixing them thoroughly can result in issues such as poor adhesion, soft spots, and cracking. Follow the instructions provided by the manufacturer carefully and mix the epoxy and hardener thoroughly.
Applying Too Much Epoxy: Applying too much epoxy resin can result in uneven surfaces, drips, and puddles. It can also lead to prolonged drying times, which may cause dust and debris to stick to the tumbler’s surface. Use a calibrated measuring cup and mix the epoxy in small batches to avoid applying too much.
Final Thoughts on Getting Rid of Fish Eyes in Epoxy Tumblers
Practice makes perfect. Eliminating fish eyes takes some trial and error, so don’t get discouraged if it doesn’t work perfectly the first time.
Invest in quality materials. Choosing a high-quality epoxy resin and hardener will make a big difference in the outcome of your project.
Be patient. Allow enough time for the epoxy to cure before applying heat to eliminate fish eyes. Rushing the process can lead to more problems.
Follow safety precautions. When using a heat gun, be sure to wear protective gear and work in a well-ventilated area to avoid any potential health hazards.
Get creative. Once you’ve mastered the technique of eliminating fish eyes, experiment with different colors, patterns, and techniques to create unique and beautiful epoxy tumblers.
Patience and Persistence is Key
Getting rid of fish eyes in epoxy tumblers can be frustrating, but remember that patience and persistence is key. It may take several attempts to achieve a perfect finish, but don’t give up.
Keep in mind that it’s important to follow the instructions carefully and use high-quality materials. Cutting corners and rushing the process will likely result in poor results.
Don’t be afraid to experiment with different techniques and tools, but be sure to take note of what works and what doesn’t. This will help you avoid making the same mistakes in the future.
Finally, don’t forget to take breaks and step away from the project if you’re feeling overwhelmed. Sometimes, taking a break and coming back with a fresh mindset can help you see the problem in a new light.
Frequently Asked Questions
What are Fish Eyes in Epoxy Tumblers?
Fish eyes in epoxy tumblers are small, circular craters or pits that form on the surface of cured epoxy, giving the appearance of a fish’s eye. They are typically caused by surface tension, air bubbles, or contaminants on the surface of the tumbler.
Why are Fish Eyes in Epoxy Tumblers a Problem?
Fish eyes can be unsightly and can ruin the smooth, glossy finish of an epoxy tumbler. They can also weaken the overall structural integrity of the epoxy and make it more susceptible to damage or cracking over time.
What are some Common Causes of Fish Eyes in Epoxy Tumblers?
Common causes of fish eyes include improper mixing of epoxy and hardener, insufficient preparation of the tumbler surface, using low-quality epoxy, applying epoxy in humid or cold conditions, and using the wrong application tools.
How can Fish Eyes in Epoxy Tumblers be Prevented?
To prevent fish eyes, it is important to properly prepare the tumbler surface, mix the epoxy and hardener thoroughly, use high-quality epoxy, apply epoxy in warm and dry conditions, and use the correct application tools.
What are Some Remedies for Fish Eyes in Epoxy Tumblers?
If fish eyes do occur, there are several remedies that can be used, including sanding and reapplying epoxy, using a heat gun or torch to remove air bubbles, and allowing the epoxy to self-level after application.