© 2008-2009, Brice Burrell
Page 49
This drawing shows the insert. The scale is larger in this picture than the real one, to make it a little
easier to see. The first thing to notice, the scale has graduations on both sides of zero. Zero is the
centerline of the cut. The graduations above zero (towards the top of this drawing) represent the
outside of the cutting radius, also referred to as R2 in this drawing. And the gradations below zero are
the inside radius or R1. In this example a 10 mm bit is used, the outside radius is plus 5 mm from
zero and the inside radius is minus 5 mm.
This drawing shows how to set the insert with the MFS scale. With the 10 mm bit, the insert is set to
cut a 310 mm outside radius and 300 mm inside radius.