A glue gun is a handheld device that uses heat to melt adhesive sticks, allowing users to apply the glue in a controlled manner. It is commonly used in crafting, home repairs, and various DIY projects. The melted glue cools quickly, forming a strong bond between materials like wood, fabric, and plastic. Glue guns come in different sizes and temperature settings, catering to various needs. The most common type is the hot glue gun, which operates at high temperatures, while low-temperature glue guns are safer for delicate materials. Glue sticks are available in various formulations, including clear, colored, and specialty options.