Material removal tool with noise reduction features

A method of machining a workpiece, the method comprising:

• removing material from the workpiece with a material removal tool,
• wherein the material removal tool includes a shaft having a first axis, and a body having a top side, a bottom side and a plurality of radially extending arms, the top side mounted to a first end of the shaft for rotational motion of the body about the first axis,
• wherein each arm includes a radially outward peripheral edge, and, relative to a direction of rotational motion of the body, a leading side and a trailing side,
• wherein a radially outward peripheral edge includes a cutting insert mounting structure that projects axially below the bottom side of the body, and
• wherein at least one of (i) a leading edge of the insert mounting structure includes an air-displacement structure, (ii) the radially extending arms include at least one through-opening extending from the leading side to the trailing side, and (iii) the bottom side of the body is spaced from a plane containing a bottommost surface of the projecting cutting insert mounting structure.