Hacksaw Blades

 Hacksaw blades are thin strip of metal with forwards facing teeth, that are designed to fit hacksaws and can cut different materials, such as wood, plastic and thin metal. A key factor of a how a hacksaw blade will saw through a material is due to its teeth per inch (TPI), a higher number of TPI will equate to a cleaner cut but it may take longer, and a lower TPI is used for faster cuts in metals, like copper or aluminium but with a less clean finish.