Glue guns are the mainstay of the crafting world, making thousands of projects possible. They work with materials ranging from paper and lace to wood and metal. It’s inexpensive to get started, and with glue sticks readily available, using a glue gun couldn’t be easier to use.The glue gun is a hand held tool into which you feed a solid glue stick. A heating element in the body of the gun melts the glue, and the adhesive flows out the glue gun’s metal, cone-shaped tip.