•    Make sure the material of drill and choose suitable grinding wheel.
•    Standard iis CBN grinding wheel.* CBN wheel is suitable for HSS drill, SD wheel is suitable for carbide drill.
•    Set left scale annulus to be "0" position. Turn the scale clockwise to the end, then contrarotat to adjust to the "0" position.
•    Choose suitable collet to the collet holder. (Insert the collet into holder in the 45 degree)
•    Follow up the steps for setting up the drill to the collet holder, without tighting. Keep the room for adjusting the drill.
o    Adjust the left scale to meet the diameter of the drill.
o    Insert the collet holder with the drill into the left hole and completely touch,then turn right to set up.
o    Insert the top of drill into the end, turn right to set up.
o    Tight the drill by collet holder for setting up the grinding position.
o    Take out the chuck
Grinding range    Ø2.1-Ø13(Ø15)    (Ø8)Ø13-Ø26(Ø32)
Point Angle    100° (95° )~135°    95° ~135°
Power    AC220V    AC220V
Motor    180W    250W
Speed    4800RPM    4800RPM
Grinding wheel    CBN(HSS)orSD
Dimension    32x18x19cm    46x24x22cm
Weight    10kg    27kg