... and tightening, installation sheet wheel, and screw down the nut, make the cut rail machine in working state.3, a hand pull ... transform cutting position, to cut.8, is usually first cut the rail top, then cut the waist, and cut the bottom, until the cut off.9, when wafer ... this time should be placed on the other side of the grinding wheel to cut rail, until the cut off. When grinding wheel wear ...