... ,6.Small electric current,workpiece cross section burns lightly,7.No vibration and no bouncing on work place,8. ... hard metal,like general steels,ferrous metal,aluminium,iron,angle iron,brass,bronze,carbon steel,casting,railway,non-ferrous ... tool so that the wheel is at a perpendicular angle to the workpiece being cut;5.Keep a light ... manufacturers 5" inch resin bonded cut off wheel for angle grinders