Self-leveling epoxy is the result of mixing resin and hardener that comes in separate bottles. After the two solutions are combined, the mixture is poured on a surface where it flows to level itself out to be an 1/8 inch thick. It then cures to become a hard clear surface that’s scratch and water resistant. Restaurants and bars tend to use it on their tabletops. If you want to make a countertop with pennies, bottle caps, and other stuff sealed inside, you’ll need to pour additional epoxy layer because each layer is 1/8 inch thick. The cured epoxy has a very shiny surface and because it’s clear, it resembles glass. We used Pro Marine Supplies Table Top Epoxy for our countertop project. Their product is UV resistant, which not all self-leveling epoxy brands are not.