Debris ejection techniques for drilling tools

A tool, comprising:

• a body having a central portion and at least two wing portions extending from the central portion;
• and
• a drill bit separate from the body and comprising a bore section and a counterbore section, wherein the counterbore section is coupled to the central portion of the body and extends away from the body along a first direction, such that rotation of the drill bit about an axis along a length of the drill bit in the first direction causes a corresponding rotation of the body,
• wherein the at least two wing portions extend away from the central portion along a second direction orthogonal to the first direction, and wherein each of the at least two wing portions includes a wall that rotates about the axis with the drill bit,
• wherein the body is configured to rotate within a cup of a rotary tool to sweep debris within the cup.

A tool, comprising:

• a cup having an internal void, an open end at a bottom of the cup, and one or more openings extending along a circumference of the cup;
• a drill bit that passes through the internal void of the cup such that a length of the drill bit extends out the open end of the cup at a fixed distance, the dill bit including a bore section and a flat counterbore section;
• and
• an ejector separate from the drill bit and within the cup, wherein the flat counterbore section of the drill bit extends through a slot in a central portion of the ejector such that the ejector is configured to spin with the drill bit, independently of the cup, and such that one or more surfaces of the ejector are configured to push workpiece debris within the cup as the one or more surfaces spin with the drill bit, so as to facilitate ejection of the workpiece debris through the one or more openings.