New to resin? Learning how to mix epoxy resin correctly is one of the most important steps in getting a clean, glossy, and properly cured result. Whether you are making coasters, jewellery, flower preservation pieces, resin art, top coats, or river tables, the way you measure and mix your resin will directly affect the final finish.
For beginners, most resin problems start at the mixing stage. Sticky resin, soft spots, bubbles, cloudy areas, overheating, or a project that does not cure properly are often caused by incorrect ratios, poor mixing, wrong temperature, or using the wrong resin for the job.
This beginner’s guide explains how to mix epoxy resin correctly, including epoxy resin mixing ratio, mixing time, pot life, curing time, temperature, humidity, and common mistakes to avoid. It is written especially for beginners in Malta who want to start resin work with more confidence.
Before you start mixing
Epoxy resin does not dry like normal paint. It cures through a chemical reaction between resin and hardener. This means the ratio, temperature, and mixing method all matter. If one of these is wrong, the final piece may stay sticky, soft, cloudy, or full of bubbles.
What Is Epoxy Resin?
Epoxy resin is usually supplied in two parts:
- Part A: Resin — the clear liquid base.
- Part B: Hardener — the part that reacts with the resin and allows it to cure.
When resin and hardener are mixed together in the correct ratio, a chemical reaction starts. This reaction turns the liquid mixture into a solid, durable, glossy finish.
This is why accurate measuring and proper mixing are so important. Resin is not forgiving if the ratio is guessed or if the cup is not mixed properly.
Understanding Epoxy Resin Mixing Ratios
Every epoxy resin product has its own mixing ratio. Common ratios include:
- 1:1 — one part resin to one part hardener.
- 2:1 — two parts resin to one part hardener.
- 3:1 — three parts resin to one part hardener.
The correct epoxy resin mixing ratio will always be written on the product label or technical instructions. Do not guess, and do not use the same ratio for every resin.
For example, a resin for small moulds may use one ratio, while a deep pour resin for tables or flower preservation may use another. If you use the wrong ratio, the resin may remain sticky, soft, cloudy, or may not cure properly.
Beginner learning note
A 2:1 resin does not mean “almost half and half”. It means the ratio must be measured accurately. Resin mixing is not something to estimate by eye.
Measuring by Weight vs Measuring by Volume
Some resins must be measured by weight, using a digital scale. Others may be measured by volume, using marked measuring cups.
These are not always the same thing. Resin and hardener can have different densities, so a ratio by weight is not always the same as a ratio by volume. Always follow the instructions of the exact resin kit you are using.
Step-by-Step: How to Mix Epoxy Resin
The best way to learn resin is to slow the process down. Before you think about colour, pigments, moulds, or pouring, focus on the basics: prepare, measure, mix, scrape, and pour carefully.
1. Prepare Your Workspace
Before opening the resin, prepare everything you need. This helps you avoid rushing once the resin and hardener are mixed.
- Resin and hardener
- Digital scale or measuring cups
- Clean mixing cups
- Mixing sticks
- Gloves
- Protective sheet or silicone mat
- Pigments, mica, or colourants if needed
- Moulds, wood, canvas, or project surface
Work on a clean, level surface. Dust, water, oil, and dirt can affect the final result.
2. Check the Temperature
Epoxy resin works best within the temperature range recommended by the manufacturer. Many resin systems work well around normal room temperature, but each product can be different.
If the room is too cold, resin can become thicker, harder to mix, and more likely to hold bubbles. If the room is too hot, resin may cure faster and give you less working time.
Malta workshop tip
In Malta, summer heat can reduce your working time, while cooler winter rooms, garages, or humid spaces can make resin thicker and more difficult to work with. Keep your workspace stable and follow the resin instructions.
3. Measure the Resin and Hardener Accurately
Measure Part A and Part B exactly according to the product instructions. Do not estimate by eye. Even a small mistake in the ratio can cause curing problems.
For best results:
- Use a digital scale if the product requires weight measurement.
- Use marked measuring cups if the product requires volume measurement.
- Place the cup on a flat surface.
- Measure slowly and carefully.
- Check the ratio before mixing.
4. Mix Slowly and Thoroughly
Once both parts are measured, mix slowly using a clean mixing stick. Avoid whipping the resin quickly. Fast mixing can add extra air bubbles into the resin.
A slow, controlled movement is better. Move the stick through the middle, around the edges, and across the bottom of the cup. The goal is to combine the resin and hardener fully without adding unnecessary air.
5. Scrape the Sides and Bottom of the Cup
One of the most common beginner mistakes is not scraping the cup properly. Unmixed resin can stick to the sides or bottom of the cup. If that unmixed resin is poured into your project, it can create sticky patches or soft areas.
While mixing, scrape:
- The sides of the cup
- The bottom of the cup
- The mixing stick itself
6. Mix for the Correct Amount of Time
Many beginners ask: how long to mix epoxy resin? The answer depends on the specific product, but many epoxy systems need to be mixed for a few minutes.
Always follow the instructions on the resin kit you are using. As a visual guide, mix until the resin looks consistent, clear, and fully combined. You should not see streaks, cloudy lines, or separate layers.
7. Use the Double-Cup Mixing Method
For extra safety, especially with important projects, use the double-cup method.
After mixing in the first cup, pour the resin into a second clean cup and mix again for a short time. This helps reduce the risk of unmixed resin from the sides or bottom of the first cup entering your project.
This method is especially useful for:
- Flower preservation
- Top coats
- Clear castings
- Customer projects
- Larger pours
8. Let Bubbles Rise Before Pouring
After mixing, allow the resin to sit briefly so some bubbles can rise to the surface. Do not leave it too long, because the curing reaction has already started and your working time is limited.
Understanding Time: Pot Life, Working Time, Cure Time, and Full Cure
When working with resin, you will often see terms such as pot life, working time, curing time, and full cure. These terms are important because they tell you how long you have to work and when the piece can be handled.
Pot Life
Pot life is the amount of time the mixed resin remains usable inside the mixing cup. Once resin and hardener are combined, the reaction starts.
Working Time
Working time is the time you have to pour, move, colour, or adjust the resin before it becomes too thick.
Cure Time
Cure time is the time the resin needs before it becomes solid enough to handle.
Full Cure
Full cure is when the resin has reached its final hardness and strength. Always check the product instructions before demoulding, sanding, delivering, or using the finished piece.
Epoxy Resin Temperature and Humidity in Malta
Epoxy resin temperature can make a big difference to your result. In Malta, this matters because we often work in warm summers, humid conditions, garages, workshops, or rooms without constant temperature control.
Cold Conditions
When resin is cold, it becomes thicker. This can make it harder to mix and may trap more bubbles. Cold temperatures can also slow down curing, meaning your project may stay soft or tacky for longer than expected.
Hot Conditions
Heat speeds up the curing reaction. In Malta’s summer months, this can reduce your working time. If the room is very hot, your resin may thicken quickly or overheat in the cup, especially if you mix a large amount at once.
Humidity
Malta can be humid, and humidity may affect some resin projects, especially if there is moisture on the surface, in the mould, in flowers, or in wood. Before pouring resin, make sure your materials are dry and clean.
Common Beginner Mistakes When Mixing Epoxy Resin
If you are asking why is my resin sticky, one of these mistakes is often the reason.
- Using the wrong ratio — always follow the exact ratio on the product label.
- Mixing too fast — fast mixing can create more bubbles.
- Not scraping the cup — unmixed resin can remain on the sides and bottom.
- Using the wrong resin — not every resin is suitable for every project.
- Pouring too thick — every resin has a recommended maximum pour depth.
- Working in the wrong temperature — cold slows curing; heat reduces working time.
- Adding too much pigment — too much pigment can affect curing.
Which Resin Kit Should Beginners Choose?
Choosing the right resin kit depends on what you want to make. At Elto Bert, we guide customers before they buy because using the correct resin for the project can save time, money, and frustration.
For Coasters and Small Moulds
Choose a resin suitable for small castings and mould work. This is ideal for beginners making coasters, trays, small home décor pieces, and small gifts.
For Jewellery and Small Art Pieces
Choose a clear resin that works well for smaller detailed pieces. Good clarity, bubble control, and proper curing are important.
For Top Coats
For coating tables, artwork, countertops, trays, or boards, choose a resin designed for surface coating. A top coat resin should level well and create a smooth finish.
For River Tables and Deep Pours
Deep pour projects need a resin designed for thicker pours. Do not use a normal coating resin for deep casting unless the manufacturer says it is suitable.
For Flower Preservation
Flower preservation needs careful preparation and the right resin choice. Flowers must be properly dried, and the pour depth must match the resin system.
If you are unsure which resin to choose, contact Elto Bert before starting. We can help you choose the best resin kit Malta customers can use for their specific project.
Safety Tips When Mixing Epoxy Resin
When working with epoxy resin, always take safety seriously.
- Wear gloves.
- Work in a ventilated area.
- Wear a suitable respirator or mask if ventilation is poor, if the product instructions require it, or if you are sensitive to fumes. For stronger vapours, use a respirator with organic vapour cartridges rather than a simple dust mask.
- Avoid direct skin contact.
- Keep your workspace clean.
- Protect your table or work surface.
- Keep resin away from children and pets.
- Read the product instructions before use.
- Follow the safety information provided with the product.
Quick Resin Mixing Checklist for Beginners
- Choose the correct resin for the project.
- Read the product instructions before opening the bottles.
- Check whether the ratio is by weight or by volume.
- Prepare your workspace and tools first.
- Measure accurately.
- Mix slowly.
- Scrape the sides and bottom of the cup.
- Use the double-cup method for important pours.
- Work within the recommended temperature range.
- Do not add too much pigment.
Final Thoughts
Learning how to mix epoxy resin correctly is the foundation of every successful resin project.
The most important points are simple: use the correct ratio, measure accurately, mix slowly, scrape the sides and bottom, work at the right temperature, and choose the correct resin for your project.
If you are new to resin, do not worry. Everyone starts somewhere, and many beginner mistakes can be avoided with the right guidance.
Need help choosing the right resin kit?
At Elto Bert, we supply professional resin kits in Malta and help beginners, hobbyists, artists, and makers choose the right resin for their project.
Whether you are making coasters, resin art, jewellery, flower preservation pieces, top coats, or custom tables, we can help you start with the right product and the right advice.
FAQ: How to Mix Epoxy Resin
Why is my resin still sticky?
Sticky resin is usually caused by the wrong mixing ratio, poor mixing, cold temperature, or unmixed resin stuck to the sides or bottom of the cup. Always measure accurately, mix thoroughly, and follow the product instructions.
How long should I mix epoxy resin?
The correct mixing time depends on the resin product. Many epoxy resins need to be mixed for a few minutes, but you should always follow the instructions on the specific resin kit you are using.
Can I mix resin by eye?
No. Resin should not be mixed by eye. Resin and hardener must be measured accurately according to the product’s ratio, either by weight or volume.
What temperature is best for epoxy resin?
Most epoxy resins work best at normal room temperature, but the exact range depends on the product. Always check the manufacturer’s instructions. In Malta, avoid working in very hot summer conditions or cold damp rooms where possible.
Can I use epoxy resin outdoors?
Some epoxy resins have UV resistance, but outdoor use depends on the specific product and exposure conditions. For outdoor projects, ask for advice before choosing a resin.
Which resin is best for beginners?
The best resin for beginners depends on the project. Coasters, jewellery, top coats, deep pours, and flower preservation may all need different resin systems. Contact Elto Bert and we can guide you to the right resin kit.
How much pigment should I add?
Use pigment carefully and avoid adding too much. Too much pigment can affect curing or change the finish. Start small and follow the instructions for both the resin and the pigment.
Do I need a special resin for deep pours?
Yes. Deep pours, river tables, large moulds, and flower preservation pieces normally need a resin designed for deeper casting. A normal top coat resin may not be suitable.