Electrode for Removing Welds and Chamfer Cracks Prior to Welding Performs well with all types of welding machines with sufficient capacity No need for compressed air or oxygen Excellent restrike capability Groove size and depth are easily controlled Vulcan 700-GR, also known as a "Welder's eraser," is an electrode used for gouging and chamfering of ferrous and non-ferrous metals, removing unwanted or defective weld metal, preparing parts prior to welding, removing risers, and reducing large areas of metal prior to machining. Can also be used for cutting frozen nuts and bolts.