This fluid has come from years of research and development specifically on the most effective ways to machine and fabricate one of the most common metals around: aluminum. This formulation provides enhanced performance because of our focused dedication to devising the best ways to machine aluminum and other soft metals. Tap Magic Aluminum is the cutting fluid of choice for any work on aluminum, brass, copper, and other soft metals. Unlike some other fluids on soft metals, it will not stain the surface of the work. Precision is always excellent and the finish is always superb.