They have a, or did have a cd, that showed how to use the power. I have a copy. It only shows doing screw holes that are striped out. Heat the screw till red hot put it in powder then insert in screw hole when all the way in, Do a quater turn right. The rods they and others sell are melted in to fill holes with heat guns or iron type devices. See search for leads to other sites. that sell the eqpt. .