Method and apparatus for monitoring and recording of the operating condition of a downhole drill bit during drilling operations

A method of manufacturing a rock bit for use in drilling operations in a wellbore, comprising:

• providing a plurality of bit legs;
• forming at least one sensor cavity in each of said plurality of bit legs;
• forming a wire pathway in each of said plurality of bit legs;
• providing a plurality of fluid-impermeable tube segments;
• welding said plurality of bit legs together to form a bit body;
• securing said plurality of fluid-impermeable tube segments to said bit body in communication with said wire pathway in each of said plurality of bit legs;
• locating a sensor in said at least one cavity;
• and
• routing conductors through said wire pathway in each of said plurality of bit legs and said plurality of fluid-impermeable tube segments.