Interpolated milling tools and methods

A method, comprising:

• moving a milling tool including two axially spaced apart sets of cutting inserts to an axial position within a bore;
• rotating the milling tool about a longitudinal axis;
• initiating contact between the milling tool and a wall of the bore in a region of the wall having a least amount of surface area at the axial position;
• and
• moving the milling tool around a perimeter of the bore.

An interpolated milling tool, comprising:

• a tool shaft having a longitudinal axis;
• a first set of radially spaced cutting inserts coupled to the tool shaft;
• and
• a directly adjacent second set of radially spaced cutting inserts coupled to the tool shaft and spaced from the first set of cutting inserts along the longitudinal axis;
• the first and second sets of cutting inserts being staggered from each other by at least 10 degrees;
• wherein the tool shaft includes an axial lubricant passage and at least one radial lubricant passage communicating with the axial lubricant passage and configured to deliver lubricant to each set of cutting inserts.