This is a special type of grinding or abrading process. Here removal of material occurs in minimum quantity. Usually in common practice, this method is employed to remove the grinding marks or tool marks left on the surface after various finishing processes. Honing is performed in internal surfaces, holes etc. Example is automobile cylinders. Soft materials which cannot be lapped can be honed finely since we are utilizing bonded abrasive in this process. Honing machines are identical to vertical drilling machines but in this case spindle reciprocation is carried out by hydraulic means.
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