With the proper technique, it is safe to use a heat gun to remove old grip tape from graphite shafts. Use the heat gun on low setting, keep the gun nozzle at least 6-7inches from the shaft while moving the the heat gun up and down the butt end of shaft; Be sure to rotate the shaft after a few passes. Do this several times and the tape will peel off easily
KEEP THE HEAT GUN MOVING AT ALL TIMES.
Good Luck, T Brandt