In all manufacturing industries, tool cost accounts for about 50-55%. So, greater emphasis is given to
cutting tool cost and inventing newer tool coatings which significantly increases Tool life. Carbon is
abundant and unique element in periodic table. Not only in nano form it is also used in cutting tool
industry as CBN, industrial diamond .CBN is artificial diamond and has very high hardness, next only to
natural diamond.Reseach is going on how to use carbon nano coatings. Various synthesis techniques as
PVD, CVD, CCVD, Laser Ablation etc. are available to deposit carbon nano coatings on substrate. The
challenge is yet to develop a mechanism for large scale production of nano tubes. Further the quality of
Nano tube obtained is also important. Single walled Nano Tubes (SWCNT) is far more superior to
MWCNT as far as their mechanical properties are concerned. But they are purest form of carbon nano
tubes and are difficult to obtain. Carbon nano tubes are coiled grapheme tubes which possess a very high
aspect (L/D) ratio. These carbon molecules are tiny tubes with diameters down to 0.4 nm, while their
lengths can grow up to a million times their diameter. They are very light in weight and their toughness is
very high. The carbon nanotube reinforcement of metallic binders for the improvement of quality and
efficiency of diamond cutting wheels is being tested. Advantage of superior mechanical properties of the
carbon nanotubes, can be taken by using them as fillers in epoxy resins.