don't forget to balance holders running that high of an rpm.
recommended balancing is over 15,000 rpm, but definately over 20,000 or you are going to have spindle issues.
and don't just buy balanced holders and put tools in, they need to be balanced together at those rpms. it's amazing how much the force on the spindle increases with an unbalanced holder as the rpms go over 15,000. |