A few minutes work with the appropriate sharpening stone, and the job is done ... are made of High-Speed Steel (HSS), most are either Tungsten Carbide Tipped (TCT) or solid carbide.

Tungsten is a metal in group VIB of the periodic table with atomic number 74, an atomic weight of 183.85, and a density of 19.3 Mg/m 3. Its melting point is 3410 C, and it boils at 5930 C. In the ...