1) Operation speed:600-950rpm; 2) Refresh the cooling water adequately,Preventing grinding disk or diamond sand from deterioation,But little water for Polisihing Disks{final polish}; 3) Grinding or Polishing sequence: 50#,100#,200#,400#,500#,800#,1500#,3000#,polishing disk ; 4)Diameter:3",6",8",10".
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