Epoxy Vs. Resin Explained
An Epoxy is thermosetting polymers that have individualized mechanical and resistance properties. The term epoxy is sometimes used to refer to the cured end product or any of the necessary components within epoxy resins and is also a colloquial name for epoxide. Epoxy resins, also known as polyepoxides, are a class of reactive prepolymers and polymers. You can find where to buy resin for your project from among several online stores.

What Is A Resin?

In polymer chemistry and material science, the resin is a solid or high viscous substance of plant or synthetic origin that is typically convertible into polymers. Gums are usually mixtures of organic compounds. It may not be so easy to differentiate between epoxy and resin. The easiest way to distinguish between the two is by knowing the intended use of each of them. From the three different resin, you can identify each by the distinctive features and intended purpose. There are three types of resin: polyester resin, casting resin, and epoxy coating resin.

Polyester Resins

  • Polyester is cheaper than epoxy resins
  • That is commonly used in the marine industry such as boat building
  • Used for the casting of bumpers or gutters and repair of plastic parts.

Casting Resin

  • They are low viscous compared to epoxy coating resin
  • They are made explicitly for casting works such as molds, figurines, filling wood, and jewelry.
  • Unlike coating resins, casting resins have a thinner consistency and take a longer time to dry. Casting resin takes a longer processing time, and it can take up to one week to cure completely.
  • This thinning feature of casting resin allows it to penetrate and fill even the tiniest gaps and cavities.
  • Casting resin allows you to cast thicker layers as compared to epoxy resin.
  • The thin consistency enables layers of paint to mix quickly.
  • Casting resin is specially made for particular applications.
  • They can be colored with color pastes, alcohol inks, and color pigments.

Epoxy Coating Resin

  • That is mainly used coating applications
  • Epoxy coating resin has a more viscous consistency as compared to casting resin.
  • It dries or cures faster than casting resin.
  • Compared to casting resin, epoxy coating resin has relatively shorter processing times.
  • Because the ink layers do not mix, they can be better controlled.
  • Epoxy coating is more resistant to mechanical influence as compared to casting resin.
  • Epoxy coating is suitable on rougher surfaces and is water-resistant.
  • They can be colored with color pastes, alcohol inks, and color pigments.


It is essential always to wear protective clothing and a breathing mask when dealing with epoxy resin and to cast resin. Using high-quality clear casting resin and proper mixing ratios gives you better results for your project. Not knowing whether to use casting resin or epoxy coating resin can be disastrous for your project as each is uniquely made for specific applications. Though the pros of using epoxy casting resin and casting resin outweigh the cons, it’s not recommended to use them for permanent outdoor projects or direct exposure to UV. On that note for more info be sure to check out https://www.theepoxyresinstore.com/.

The Epoxy Resin Store
Phone: (951) 677-0400
Address: 540 Crane St suite A Lake Elsinore, CA 92530

Social Accounts:
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Robert v potter

Robert v potter

what surface will release the coating after casting

Jesse Corcoran

Jesse Corcoran

About time someone explained it like this.. Amazing job explaining the differences. I am also thrilled you covered the importance of protective gear.


Jesse jackson

Jesse jackson

Thank you, the article was very informative.



Could you please explain to me why after a project has been poured and set up say a 3 tier cake mold why after putting it together it will start bending usually the bottom tier but sometimes the middle one also, what am I doing wrong? I am using Clear Epoxy Resin.

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