What’s the Difference Between Low and High Viscosity Epoxy?

Low Viscosity Epoxy: When to Use It

Low viscosity epoxy is free-flowing and self-levelling. This makes it ideal for deep pours, such as creating river tables, thick castings, and projects that require the resin to easily penetrate molds or fill large spaces. Its fluidity helps bubbles rise and escape, promoting a clear, glass-like finish. For example, EpoxyTable 5-Five is specifically designed for deep pouring tasks, with low viscosity enabling up to 5cm single-layer casts without excessive heat build-up.

High Viscosity Epoxy: Precision and Surface Work

High viscosity epoxy is much thicker, allowing greater control during application. This is essential for artistic uses, such as resin painting, geode art, and glossy finish layers on coasters or trays, where flow needs to be restricted. Products like Art Pro Deluxe are formulated to stay in place and prevent colours from bleeding into one another, delivering precise lines and effects when detail matters most.

Choosing the Right Viscosity for Your Project

• If you’re filling moulds, casting tables, or working in thick layers, opt for a low viscosity resin for better flow and bubble release.
• For surface coating, fine artwork or smaller decorative pieces where shape and design definition are important, a high viscosity epoxy is best.
• Medium viscosity resins, such as Art Pro, offer a balanced option for general art surfaces and thin protective coats.