By default, bokken, which are wooden swords used for training and practice, are not sharp. They are typically made with rounded or blunt edges to ensure safety during training and minimize the risk of injuries. The primary purpose of a bokken is to replicate the weight, balance, and handling characteristics of a real sword while allowing practitioners to train and practice sword techniques without the dangers associated with sharp blades.

However, it's important to note that with extensive use, bokken can develop minor dings, nicks, or wear, which can create some sharp edges. Regular maintenance and inspection of a bokken are necessary to ensure that it remains in a safe and usable condition. If any sharp edges or splinters are detected, they should be sanded down or repaired to maintain the safety of the training tool.

In summary, bokken are not intentionally made to be sharp, but over time, they can develop sharp edges through wear and tear. Proper care, maintenance, and regular inspection are essential to ensure the safety and usability of a bokken during training.