Supply of high temperature heat cleaning sponge iron sponge iron electric iron

 It is rough but soft surface by the tip above the oxide layer and rub off the dirt, not the type of sandpaper polished, so nothing to worry about the tip will have any wear and damage. Electric soldering iron tip in a long time, there will be an oxide layer, making it impossible to melt the solder, or solder does not adhere to electric iron head, welding very difficult. Pointed tip is often part of non-stick tin, not welded. Presumably all the used electric iron friends have such experience. This time can be electric iron sponge at a high temperature above the rub a few times, the tip of the oxide layer will rub off, exposing the inside fresh tip, it can be welded well. High temperature soldering iron sponge, swelling sponge iron