How to Work with Epoxy Resin: Beginner's Step-by-Step Guide

Epoxy resin offers endless possibilities for creativity and the creation of unique projects, including clocks, artwork, trays, jewelry, tabletops, coasters, and much more. If you are new to working with epoxy resin, this guide will help you avoid common mistakes and achieve professional-looking results.

What Is Epoxy Resin?

Epoxy resin is a two-component material consisting of:

  • Resin (Component A)
  • Hardener (Component B)

When mixed in the correct ratio, a chemical reaction begins. As a result, the mixture gradually cures and transforms into a strong, durable, and transparent material.

Epoxy resin is widely used for decorative items, artistic projects, furniture, river tables, clocks, jewelry, and many other creative applications.

Tools and Materials You Will Need

Before starting, prepare the following tools and materials:

  • Digital scale
  • Plastic mixing cups
  • Wooden mixing sticks or spatulas
  • Silicone molds or a prepared surface
  • Protective gloves
  • Hygrometer (for monitoring air humidity)
  • Heat gun or gas torch for bubble removal
  • Spirit level for checking surface alignment
  • Paper towels for cleaning tools
  • Resin dyes or pigments

Preparing Your Workspace

Proper preparation of the workspace is essential for achieving the best results.

  • The work area should be clean and dry
  • The room temperature should be between 22°C and 25°C
  • Relative humidity should ideally not exceed 60%
  • The working surface must be perfectly level
  • Dust contamination during curing should be prevented

It is recommended to prepare all materials and tools before mixing the resin.

Proper Mixing of Components

Always follow the mixing ratio specified by the manufacturer.

Different epoxy resins require different mixing ratios, such as:

  • 100:55
  • 100:60
  • 100:66
  • 100:70
  • 100:92

Always read the instructions supplied with your epoxy resin before use.

Mixing Procedure

  1. Measure the required amount of Resin (Component A)
  2. Add the corresponding amount of Hardener (Component B)
  3. Mix slowly and thoroughly for 3–5 minutes
  4. Pay special attention to the sides and bottom of the mixing cup
  5. Stir gently to minimize the introduction of air bubbles

After thoroughly mixing Components A and B, you may add resin dye or pigment if desired.

Start with only a few drops of liquid dye or a small amount of pigment on the tip of a mixing stick. As you mix, you will be able to evaluate the color intensity and adjust it accordingly.

Do not exceed 3% pigment or dye by the total weight of the mixed resin system. Excessive amounts may interfere with the curing process and prevent the resin from fully hardening.

Insufficient mixing is one of the most common causes of sticky, soft, or partially cured resin.

Pouring the Resin

Once mixed, the resin is ready for use.

  • Carefully pour the resin into the mold or onto the prepared surface
  • Use a spatula if necessary to distribute the resin evenly
  • Never exceed the maximum recommended pouring thickness specified by the manufacturer

Important: Excessive pouring thickness may cause the resin to overheat, smoke, crack, yellow, or even boil due to an uncontrolled exothermic reaction.

For deep pours, always use epoxy resin specifically designed for thick casting applications.

Removing Air Bubbles

After pouring, air bubbles may appear on the surface.

To remove them, you can use:

  • Heat gun
  • Gas torch

Move the heat source quickly across the surface from a safe distance of several centimeters.

Do not hold the heat in one area for too long, as overheating may damage the resin surface.

Curing Time

Curing time depends on the type of resin, room temperature, and pouring thickness.

Typical curing stages are:

  • After 6–12 hours, the resin begins to thicken
  • After approximately 24 hours, the piece can usually be carefully removed from the silicone mold and placed on a flat surface for further curing
  • After 48–72 hours, the resin reaches its primary mechanical strength
  • Full curing may take 5–7 days depending on the epoxy resin system

During curing, protect the project from dust by covering it with a plastic container, box, or protective cover whenever possible.

Avoid moving the project unnecessarily until curing is complete.

Helpful Tips for Beginners

  • Always follow the manufacturer's mixing ratio
  • Use a digital scale for accurate measurements
  • Work at temperatures above 22°C
  • Mix slowly and thoroughly
  • Do not exceed the recommended pouring thickness
  • Do not exceed 3% dyes or pigments by the total resin weight
  • Test new materials and techniques on a small project before starting a large one

By following these recommendations, you can avoid most common mistakes and create beautiful, durable, and professional-quality epoxy resin projects.