PROBLEM TO BE SOLVED: To supply a ball media selection method while restricting polished materials from colliding one another and a ball media selection device that enables you to have such a selection.;SOLUTION: The method includes a process to supply a mixture of ball media and polished materials to a beveled face 52 and a process to remove the ball media from the beveled face by rolling on the beveled face and to have the polished materials stay on the beveled face.;COPYRIGHT: (C)2004,JPO&NCIPI
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