There are a variety of different types of resin available, each with its own composition and properties. We will be giving a little insight into the following types of resin; UV Resin, Polyurethane Resin, Epoxy Resin, and Polyester Resin. Most resins are made up of two components, being the hardener (catalyst) and the base resin. When you mix together these components it causes a chemical reaction that enables the resin to set. UV resin is different in that it is only one component, as this type of resin requires exposure to UV light to trigger the chemical reaction and allow the resin to set.