Drill bit

A drill bit assembly for making a hole in a subterranean formation the drill bit assembly comprising:

• a connector body defining a centerline axis about which said connector body rotates while drilling;
• a plurality of blade members mounted to the connector body and circumferentially arranged around the centerline axis to form a cutting blade having an outer diameter generally equal to a desired hole diameter, wherein each blade member comprises at least one aperture configured to receive a cutting pin;
• and
• a removable sleeve positioned within the at least one aperture, the removable sleeve configured to rotatably engage with the cutting pin to allow the at least one cutting pin to rotate within the removable sleeve to minimize wear at a point of engagement of the cutting pin, when the drill bit assembly operates to make the hole in the subterranean formation,
• wherein the blade members are configured to nest circumferentially around the centerline axis to form the cutting blade,
• wherein the outer diameter of the cutting blade is configured to be variable by adjusting a mounting position of each of the blade members on the connector body to adjust a nesting configuration of the blade members, positioning at least one protrusion into at least one complementary recess, bringing the blade member into an engagement position, and
• wherein each of said blade members includes a first engagement surface and a second engagement surface perpendicular to the first engagement surface, and wherein the blade members are configured so that the first engagement surface of one blade member engages a second engagement surface of an adjacent blade member.