Sandvik Coromant Silent tools - users guide - Manual (Page 13)

13
If the bar is placed upside down the cutting forces will
be directed in the opposite direction to the gravity force.
The counterweight may not be needed, depending on
cutting data.
Common set-up
Running the bar conventionally
generates cutting forces that push
the insert downwards.
Alternative set-up
Running the bar upside down
changes the direction of the
cutting forces which improves the
stablity. This can also improve chip
evacuation.