One of the most common questions for newcomers and seasoned enthusiasts in resin art and crafts is: Can I change the A + B mixing ratio? The answer, simply put, is no. Each epoxy resin is formulated with a specific ratio of Resin A (base) to Hardener B (curing agent) to achieve the best results. Adjusting this ratio risks incomplete curing, reduces clarity, causes yellowing, or leads to sticky surfaces. For reliable, high-quality results, mixing ratios must be followed precisely as instructed by manufacturers.

This guide will walk you through why fixed ratios matter and compare the best epoxy resins from ResinPro, highlighting their ratio requirements and where each shines in your next project.

Why Mixing Ratios Matter in Epoxy Resin

Epoxy resins cure through a chemical reaction between two components—Resin A and Hardener B. Do not alter the recommended ratio. Changing the proportion of either component disrupts molecular crosslinking, often resulting in tacky, under-cured surfaces, or brittle, weak bonds.

For example, increasing hardener may speed initial setting but compromise overall strength and clarity. Too much resin can prevent full curing, leaving a sticky or cloudy finish. Changing the ratio can compromise results—so always measure with care.

Comparing ResinPro Products by Mixing Ratio & Application

Each resin has a fixed A + B ratio, selected for its particular cure time and application type. Always check the product instructions before mixing.

In-Depth Look at Our Top Fixed-Ratio Epoxy Resins

For artists and surface perfectionists, “Art Pro” – Clear Epoxy Resin for Artists and Surface Coating delivers stellar clarity, UV protection, and a reliable 3:2 mixing ratio. If you want even more line control and higher viscosity for geode or layered structures, “Art Pro Deluxe” – Ultra-High Viscosity Epoxy Resin for Artists is engineered for you with a 100:70 (A:B) ratio for sharp details and quick curing.

If deep pour is your goal—for projects like river tables and extra-thick art pieces—ResinPro offers two excellent options. “EpoxyTable 5-Five” – Deep Pour Epoxy Resin for Tables and Large Projects – Up to 5cm allows single pours up to 5 cm and promises robust cure and UV resistance at a 100:55 ratio. For super-sized projects, “Epoxytable 10-Ten” – Deep Pour Epoxy Resin for Tables, Up to 10cm Casting supports up to 10cm (in stages), with a 4:1 ratio ideal for larger castings and professional tables.

Prefer multipurpose casting and finer work? “Trasparente” – Multipurpose Clear Epoxy Resin for Casting – Up to 2cm excels for small pours, jewellery, and detailed furnishings using an easy 100:60 mix ratio. For odourless application and full clarity in layers up to 1.5cm, “Icrystal” – Clear Epoxy Resin – Odourless Formula – Up to 1.5cm incorporates a safe and straightforward 2:1 ratio.

Every product in the ResinPro range is carefully engineered so you never need to adjust the mix. Consistency ensures proper curing with optimal surface quality and durability.

Frequently Asked Questions About Resin Mixing Ratios

Want to know more about which resin to use, how to guarantee a perfect cure, or how layer thickness matters? See expert answers below and shop with confidence.

Summary: Why Stick to the Manufacturer’s Ratio?

All professional and hobbyist grade epoxy resins, including those from ResinPro, are designed with precision mix ratios to ensure full performance. Using the recommended mix ratio is not just a suggestion—it’s a necessity for safe, stunning, and long-lasting results. Trusting each product’s unique formula means optimal clarity, strength, and resistance to yellowing or surface flaws.

If you have questions about the best choice for your project or technique, our helpful team can guide you to the right solution from the Resins for Pour Paint and Accessories, Top Sellers, Resins for Tables and Surfaces Finishes, or Multipurpose Epoxy Resins category.