Low to Mid Volume  If you run low to mid volume foam bonding, you can use a standard glue gun and glue sticks. Make sure you choose glue sticks which can be applied at cooler temperatures, so you don't melt the foam. You'll also need to use a glue gun which can be run at variable temperatures (high and low heat) Bulk Volume For higher volume projects, we recommend spray gun application of hot melt glue. Spray application guns include a hose connected to a compressed air tank. The air is forced out as the glue is dispensed from the glue gun. This combination of air and hot melt "sprays" the hot melt onto your substrate. Spray hot melt application is great for foam bonding because it reduces the likelihood of melting the foam.