Granite is hard and dense, making it extremely prone to wear with ordinary tungsten steel tools. Specialized granite engraving tools are typically made from solid carbide material. The tools are categorized into flat-bottomed tip tools, ball-end mills, and tapered milling cutters, with reinforced edges that offer impact resistance, wear resistance, and minimal chipping.

    These tools feature sharp cutting edges, enabling high-speed stone cutting and the ability to carve large letter outlines, deep grooves, and relief textures. The tapered flat-bottomed blade is used for contour lines, producing clean and precise edges, while the ball-end blade is employed for curved relief, ensuring smooth and natural texture transitions. The high hardness of the tool body allows for prolonged continuous operation, reducing the need for frequent blade changes.

    Stone dust is abundant, and cutting resistance is strong, so the blade angle of the tool is reinforced through thickening. Compared to woodworking tools, granite engraving tools have a thicker and more rigid body. They are widely used in stone tablet engraving, stone relief carving, and landscape stone processing. Properly controlling the cutting depth and speed ensures both engraving precision and effectively extends the tool's service life, making them a specialized tool for CNC stone processing.