Resin casting is a process used to create objects by pouring liquid resin into a mold. The resin hardens over time, taking the shape of the mold. This technique is popular for making decorative items, jewelry, and prototypes due to its versatility and ability to capture fine details. The two main types of resin used in casting are epoxy resin and polyester resin. Epoxy resin is known for its strength and clarity, making it ideal for high-quality finishes. In contrast, polyester resin is often more affordable and cures faster, but may not be as durable or clear as epoxy.