Question. I have a lot of deck screws that are rusted to the trailer frame, and I have twisted my TORX bit beyond use. Has anyone used a single carbon rod using about 60 amps DC to heat up the screw so the rusty screw will glow red and break the rust barrier. I have seen someone remove a large nut from a rusty farm machinery , by grabbing the nut with the two rods until it glowed cherry red, and when cooled, the nut came right off. I am hoping that in doing this, the screw will back out with a new bit in an 18 v Dewalt impactor. Which way should should the current run, through the rod, to the screw head, or from the metal deck through the screw to the holder?