A hot glue gun is a handheld tool that uses heat to melt adhesive sticks, allowing for quick and easy bonding of various materials. It is commonly used in crafts, home repairs, and DIY projects. The melted glue cools and hardens rapidly, creating a strong bond between surfaces like wood, fabric, plastic, and metal. Hot glue guns come in different sizes and types, including low-temperature and high-temperature models. Low-temperature guns are ideal for delicate materials, while high-temperature guns provide a stronger bond for tougher materials. Safety features, such as insulated nozzles, help prevent burns during use.