Drill a blind hole across the crack with the appropriate drill size (#49 typically). Clear the hole of chips. Insert the rod marking the circumference where it exits the hole. Spinning the rod in a bench motor, scribe the rod at the pencil mark with a jewelers saw to a depth equal to approximately 1/3 the diameter of the rod. Place 3 drops of CA glue into the hole. Insert the carbon rod. Break off the rod at the scrib line. You're now read to finish up with wood dust and CA. .060" diameter.
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