Backside countersinking inserted cutter

A countersink tool configured to form a countersink in an object, the countersink tool comprising:

• a shank having a shank width and a shank longitudinal axis;
• a neck coupled to or integral with the shank, wherein the neck has a neck width and a neck longitudinal axis;
• an insert housing coupled to or integral with the neck, wherein the insert housing has an insert housing width and an insert housing longitudinal axis, wherein the insert housing width is less than the shank width and greater than the neck width, wherein the shank longitudinal axis, the neck longitudinal axis, and the insert housing longitudinal axis are parallel to and laterally-offset from one another, wherein the neck longitudinal axis is between the shank longitudinal axis and the insert housing longitudinal axis, and wherein the insert housing defines an opening and a slot;
• and
• an insert configured to be positioned within the slot in the insert housing, wherein the insert defines an opening that is configured to be aligned with the opening in the insert housing when the insert is positioned within the slot, wherein the insert comprises a tapered surface, wherein the tapered surface is oriented at an angle with respect to the insert housing longitudinal axis, wherein the angle is from about 40 degrees to about 70 degrees, wherein the neck, the insert housing, and the insert are configured to be inserted at least partially through a hole in the object, wherein the tapered surface of the insert is configured to form the countersink in the object while the neck is positioned in the hole, and wherein a ratio of a diameter of the countersink to a diameter of the hole is from about 1.8:1 to about 3:1.

A method for producing a countersink in an object, the method comprising:

• aligning an insert housing of a countersink tool with a hole in an object, wherein the insert housing has an insert housing longitudinal axis;
• moving the insert housing and a neck of the countersink tool at least partially through the hole while the insert housing is aligned with the hole;
• and
• aligning a shank of the countersink tool with the hole once the insert housing has passed through the hole, wherein the shank has a shank longitudinal axis, and wherein the insert housing longitudinal axis is parallel to and offset from the shank longitudinal axis.