A heat press is a machine used to transfer designs onto various materials, such as fabric or ceramics, using heat and pressure. It typically consists of two heated plates that press together, allowing the design to adhere to the surface. Heat presses are commonly used in industries like apparel, where they apply graphics or logos to clothing items. These machines come in different types, including clamshell, swing-away, and cap heat presses, each designed for specific applications. They are popular among small businesses and hobbyists for creating custom items like t-shirts, mugs, and tote bags, making them versatile tools in the crafting world.