Understanding how much hardener to add to one litre of liquid resin is critical for anyone working with epoxy—whether you are crafting jewellery, making artwork, or building deep-pour river tables. This page is designed to help you determine precise mixing ratios across popular resin types, ensuring your final results are strong, clear, and free from curing issues.

Overview: Epoxy Resin and Hardener Ratios Explained

The correct ratio of resin to hardener is essential for a successful cure. Different types of epoxy have different mixing instructions: some require a straightforward 1:1 volume ratio, while others specify mixing by weight, such as 100:60 or 100:55. Always use the ratio for your specific resin and follow whether it is measured by volume or by weight—never interchange these methods. This overview guides you through the key differences so you can select and prepare the right resin for your needs.

Visual Guide: Resin-to-Hardener Mixing Techniques

Proper mixing is crucial for a successful epoxy cure. Use separate, clearly marked containers for resin and hardener. Measure using the specified method—by volume or weight—depending on your chosen resin system. Mix thoroughly, scraping the sides and bottom to ensure full integration for best clarity and strength.

“One-2-One” – Simple 1:1 Mixing for Jewellery and Handcrafting

If you are seeking a stress-free mixing process, “One-2-One” – Epoxy Resin for Handcraft, 1:1 Mixing Ratio is ideal. You simply combine resin and hardener in equal amounts by volume—so, for one litre of resin, add one litre of hardener. This makes it perfect for both beginners and experienced crafters creating jewellery, cabochons, or decorative coatings. The non-toxic formulation and crystal-clear finish ensure your items come out beautiful and durable every time.

“EpoxyTable 5-Five” – For Deep Pour Projects up to 5cm

For larger or deeper projects, such as tabletops or thicker castings, “EpoxyTable 5-Five” – Deep Pour Epoxy Resin for Tables and Large Projects – Up to 5cm is tailored for the job. The recommended mixing ratio is 100 parts resin to 55 parts hardener by weight. This means for every 1,000g of resin, you should add 550g of hardener for a balanced cure. Precision is crucial here—ensure you use accurate scales and mix thoroughly to achieve a high-strength, bubble-free surface that stands up to regular use and maintains clarity over time.

“Epoxytable 10-Ten” – Deep Pour Resin up to 10cm Thickness

“Epoxytable 10-Ten” – Deep Pour Epoxy Resin for Tables, Up to 10cm Casting is specifically designed for super-deep pours. This resin system uses a 4:1 resin-to-hardener ratio by weight. So, for one litre (approx. 1,000g) of resin, you mix in 250g of hardener. The key advantage is its low exothermic reaction, which prevents overheating during thick casting—ideal for artistic tables and large sculptural projects.

“Trasparente” – Casting Resin for Details and Small Projects

When working on delicate castings, small river tables, or craft projects up to 2cm in thickness, “Trasparente” – Multipurpose Clear Epoxy Resin for Casting – Up to 2cm is a reliable choice. This product features a mix ratio: 100:60 (resin to hardener) by weight, meaning each 1,000g of resin should be mixed with 600g of hardener. The result is a crystal-clear, UV-resistant finish with outstanding mechanical resistance, suitable for woodworking, art, and hobby projects.

How to Select the Right Epoxy Mixing Ratio for Your Project

When deciding which resin to choose, consider the depth and scale of your project first. Thicker pours (for example, large river tables) need resins with lower exothermic reactions and dedicated deep-casting ratios, such as Epoxytable 10-Ten or EpoxyTable 5-Five. For crafts and jewellery, opt for One-2-One or “Trasparente” with their straightforward volumetric or simple weight ratios. Always check your resin’s technical data for exact instructions, and use accurate measuring tools to ensure the best result.

Real Project Examples and Layering Advice

For deep-pour projects and tabletops, layering is often essential. Pour in stages if working with large volumes or significant thickness, allowing each layer to partially set before pouring the next to avoid overheating and bubbles. These real examples demonstrate how following the correct ratios leads to professional, durable results.