Stone Carving Knife Materials Compared
Stone Carving Knife Materials must combine hardness, wear resistance, impact strength, and heat tolerance. The correct material improves engraving accuracy, edge life, and productivity in marble, granite, slate, engineered stone, and other mineral surfaces.
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Tungsten carbide is widely used because it balances hardness, toughness, and cost. Diamond and PCD tools provide exceptional wear resistance for abrasive stone and fine finishing, while sintered diamond segments support demanding production. Tool steel may suit softer stone or hand work but generally wears faster under continuous CNC cutting.
Select material according to stone hardness, silica content, cutting depth, spindle power, cooling, and the required detail. Use rigid workholding, control runout, and remove abrasive dust safely. A specialist cutting tool manufacturer can match grade and geometry to the job; review basic stone carving methods before finalizing parameters.
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