If you drop one of your favorite steel planes and dent the sole, metal displaced from the dent will likely leave a raised ring around it that can scratch wood. Simply rub the surface with a fine honing stone to remove the raised area. Once done, you can ignore the remaining dent, oil the unplated surface, and put the plane back to work.
When replacing sections of old galvanized pipe, use two smaller pipe wrenches to avoid twisting and jarring the rest of the pipes. Try to avoid excessive pressure or you may cause more leaks in joints down the line. When leaks develop, always inspect the rest of the piping. An entire section may need replacement, especially if the water pressure is low.