Damascus Steel or Pattern Welded Steel has the quality of being outstanding in beauty and cutting edge action . Made from stacking dissimilar steel types and forge welding in , the highest quality West Coast Coal . This steel billet containing up to 300 layers is then forged into a knife blade . Drilled , filed and ground before Heat Treatment . After which the blade is polished , etched in acid , neutralized and polished again . When these processes are complete , only then the blade is hot or cold Blued to prevent corrosion