... of new blades, for example, in total 8 tons for 100x4.5mm, 9.5 tons for 120x4.5mm. If the blade is not ... ) In general, the size of grit is 1/4-1/5 of thickness of blade, and small grits are suitable for ... , however, too fast speed will cause the saw blade quivers, electric current of mainframe too large and trouble sawing happens. ( function ...