The Oak tasar (Antheraea proylei J.) silkworm is an important source of tasar silk. The larvae of the silkworm, reared on leaves of oak tree Quercus species (Family Fagaceae), produce the cocoons from which the Oak tasar silk is reeled. Cocoon stifling is done by sun drying, smoking and in the hot air drying machines. Reeling is mostly done on a conventional device where coarse single ply yarn is produced. Nowadays Motorized reeling cum twisting machines is being used where quality Oak tasar silk yarn is reeled as well as twisted at the same time. The yarn is uniform and used for weaving fine fabrics.