Carbon steel, stainless steel, tool steel, and alloy steel are most common blade materials. Hardness is measured on Rockwell C scale (HRC), with higher numbers indicating better edge retention. Less common materials include cobalt, titanium alloys, ceramic, obsidian, and plastic
Swedish company supplying cutting tools to metal cutting industry. Headquartered in Sandviken, Sweden with 8000 employees worldwide. Part of global industrial group Sandvik's Machining Solutions business area
Cutting tools are hardened metal tools used for material removal and shaping. Single-edge tools are used in lathes and shaping machines. Drill bits have two tapered cutting edges for hole making. Endmills cut material through horizontal shear deformation. Grinding stones contain multiple cutting edges that never dull
Scissors consist of two pivoted blades that slide against each other when handles are closed. Used for cutting various materials including paper, metal, cloth, rope, and wire. Specialized types exist for hair cutting and kitchen use
Natural stones are typically made of quartz, such as novaculite from Arkansas. Belgian Coticule and Blue stones are highly valued for their natural beauty. Japanese stones (tennen toishi) are traditionally used with water. Natural stones have been used since antiquity, as documented by Pliny
Pocketknives have blades that fold into the handle. Typical blade length ranges from 5 to 15 centimetres. Used for various tasks including woodworking, hunting, and self-defense