Glue Gun G‎-250 Hot melt adhesive ‎(‎HMA‎)‎‎,‎ also known as hot glue‎,‎ is a form of thermoplastic adhesive that is commonly supplied in solid cylindrical sticks of various diameters‎,‎ designed to be melted in an electric hot glue gun‎.‎ The gun uses a continuous‎-duty heating element to melt the plastic glue‎,‎ which may be pushed through the gun by a mechanical trigger mechanism‎,‎ or directly by the user‎.‎ The glue squeezed out of the heated nozzle is initially hot enough to burn and blister skin‎.‎ The glue is tacky when hot‎,‎ and solidifies in a few seconds to one minute‎.‎