Radio Frequency Woodwelders have been used in the woodworking industry for over 30 years. The R.F. generator produces radio waves, via a pair of triode valves. The R.F. is then modified to 27 megahertz and passed down the coaxial cable to the hand gun. The electrodes on the hand gun are placed over the glue line and when the trigger on the hand gun is activated the radio waves pass into the glue line. The Radio waves vibrate the water molecules in the glue, this vibration causes heat and the heat sets off the glue, all within 5 seconds. Simplicity in itself!