#cutting tool

• Countersink — A mechanical device, machinery, or tool mounted on a machine tool (such as a drill press or milling machine), used for widening, deepening, or calibrating holes previously executed in metal, wood, or plastic. As an adjective, it describes any factor, substance, mechanism, or instrument fulfilling the structural function of increasing depth.
• Reamer — A multi-edged cutting tool with multiple teeth arranged longitudinally or helically on a cylindrical or conical surface, used for finishing, precisely calibrating, and grinding holes previously drilled into metal or other hard materials. Its functional role is to ensure minimal dimensional deviations and a microscopic smoothness of the machined internal surface.
• Roughing cutter — A metallic cutting tool, preliminary milling head, or rotary instrument used to perform an initial rough machining (roughing) before finishing a surface. In dentistry and dental technology, it represents a special bur used for the preliminary preparation of cavities or the initial grinding of prosthetic materials.
• Machining — A mechanical technological process of shaping a solid material (metal, wood, plastic) by successively removing the machining allowance in the form of chips, using specific cutting tools (lathe tools, milling cutters, drill bits), to obtain a part with well-defined geometric dimensions, shapes, and roughness.
• Cutting tool — A machine, tool, or mechanical component specifically designed to cut, turn, or mill a material, removing the surplus in the form of chips or shavings; a cutting tool. As an adjective, it describes any action, movement, or structural capacity of an instrument to penetrate the layers of a solid object to modify its geometry by chipping.
• Machinist — Performing or serving for cutting; a tool, device, or machine tool structurally designed to remove machining allowance from a part in the form of chips. As a masculine noun, it designates the skilled worker (turner, miller, planer operator) who operates these cutting industrial machines to shape metal or wood.