Abstract: A band saw machine includes a first wheel and a second wheel arranged lower than the first wheel, the first wheel and the second wheel being configured to apply a tension to a band saw blade for tracking, a first supply unit arranged between a lowermost end of the second wheel and a workpiece cutting position along a travelling direction from the second wheel toward the first wheel in a rotary travel path of the band saw blade and configured to spray a cutting fluid in a mist or to drop the cutting fluid onto a tooth part of the band saw blade, and a second supply unit arranged between the workpiece cutting position to the second wheel and configured to pour or spray the cutting fluid or a fluid for cooling over the band saw blade.

Abstract: A ring forming step includes welding opposite ends of a band saw blade including a body part having a band shape, and a tooth part including a plurality of teeth formed on one side part of the body part, to form a ring shape. A polishing step includes polishing an inner surface, an outer surface, and an end face on a side opposite to the tooth part in the ring-shaped band saw blade subjected to the ring formation. A tip tooth tip forming step includes positioning, after the polishing step, the ring-shaped band saw blade subjected to the ring formation by use of one of the inner surface and the outer surface, and the end face as references, joining a cutting tip to tooth tips of the plurality of teeth by welding, and polishing the joined cutting tip to form a tooth tip shape.