With so many epoxy resin systems available today, users often ask a critical question:

➡ What is the difference between 1:1, 2:1, and 3:1 epoxy ratios—and how do you choose the right one?

Mixing ratio plays a major role in performance, clarity, workability, and strength. At CNMI Industrial Corporation, each ratio is engineered for specific handling and curing characteristics to support both artistic and industrial applications.

This article explains how epoxy ratios work and how to select the right system for your needs.

1. What Does the Ratio Mean?

The ratio describes how much resin and hardener must be mixed for proper curing.

The ratio is determined by the chemistry of the hardener, not preference.

2. 1:1 Epoxy Systems — Fast, Convenient, User-Friendly

1:1 systems are popular in consumer, craft, and DIY markets.

Advantages

• Simple measuring

• Faster curing

• Shorter pot life

• Good for small projects

Ideal for

• Jewelry

• Small molds

• DIY art kits

• Fast-turn projects

CNMI’s TC110 1:1 is engineered for convenience without sacrificing clarity.

3. 2:1 Epoxy Systems — Balance of Clarity and Working Time

2:1 systems are widely used in deep-pour art, furniture, and resin tables.

Advantages

• Longer working time

• Better bubble release

• Lower exotherm

• Higher clarity

• Improved mechanical strength

Ideal for

• River tables (2–10 cm)

• Furniture coatings

• Large art pieces

• Transparent casting

CNMI’s HL210 2:1 is engineered for clarity and deep casting stability.

4. 3:1 Epoxy Systems — High Strength for Industrial Use

3:1 systems are formulated for demanding environments.

Advantages

• Higher structural strength

• Faster industrial curing

• Temperature resistance

• Chemical resistance

Ideal for

• Industrial flooring

• Adhesives

• Marine or composite parts

• Tooling or fixtures

CNMI’s HL310 3:1 supports industrial-grade performance.

5. How Ratio Affects Working Time & Performance

The key principle:

The lower the hardener ratio, the more user-friendly.
The higher the resin ratio, the more industrial the performance.

6. Common Mistake — Choosing Ratio Based on Convenience

Many beginners select 1:1 because it is easier to measure.
However—ratio should be selected based on application, not convenience.

Using the wrong system causes:

• overheating

• soft surfaces

• bubbles

• cloudy finish

• mechanical failure

Choosing the correct chemistry ensures reliability and predictable quality.

7. CNMI’s Product Portfolio by Ratio

Each is engineered for the industry it supports.

Conclusion: The Correct Ratio Leads to Professional Results

Mixing ratio is not just a number—it is the foundation of epoxy performance. By selecting the right system for your project, users can achieve optimal clarity, strength, and curing behavior.

At CNMI Industrial Corporation, each ratio in our epoxy lineup is engineered to deliver consistent results for global OEM partners, artists, builders, and manufacturers.

Choosing the right ratio means choosing the right outcome—and CNMI is here to support every application.