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How do we release a jammed core bit in 4 steps

Updated: Aug 22, 2021

In case of jamming of the core bit during drilling:

1. Stop the rotation of the drive.

2. Manually, using the hook wrench achieve the free rotation of the drill bit, while performing light up and down feed movement.

3. After the drill bit begins to rotate freely, turn on the drive to minimal revolutions and carefully remove the drill bit from material. Continue regular water feed during this process.

4. Remove the core sample and reinforcement fragments.

5. continue drilling.



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