
1 9.
CROSS
-
OR FACETTE GRINDING
After the sharpening procedure, you have the possibility to change the standard twist drill
shape to a cross- or facette grinding.
The twist drill remains in the prism clamp without any changes in setting. Fix the prism
with the fixation screw M4 in hole C (see page 1 5). Open the clamping lever and turn the
prism support to 1 50°.
Move with the motor feed to the left, till you touch the cross cutting edge of the twist drill
by the right edge of the grinding wheel.
Dive slowly into the center of the cross cutting edge by moving forward the prism feed.
Notice the position on the feeding scale, move back, loosen the fixation screw, reverse
the prism for 1 80°. Fix the screw again and move slowly forward again to the same
position.
1 50°
Fixation
screw M4
Clamping lever
1 6