Hello, I give you to deposit a better and more convenient method, you can go to borrow a drill, from the coconut head to drill hard, guaranteed to drill open. The second method is to find a nail to take an awl, from the head of the coconut to the low smash. The nails should be thicker ones, either cement nails would be best.

The above method you have to remember, try to make the coconut fixed not to move. Lest you hurt your hand. Thank you, if you eat coconut for a long time you can buy a drill to save trouble later. Thank you for adopting!