FAQ - Command

In [Bone], weights of each vertex cannot be deleted when Painting by [Sub] brush.

[Auto normalize] is available.
If [Normalize weight automatically] in [Paint] tab is checked, the weights of each vertex are adjusted to become total 100. You cannot delete(set to zero) weights.
If you want to delete weight by [Sub] brush, set [Auto normalize] unavailable.

[Boolean] is failed.

Change the condition and try again.
[Boolean] is often failed in the following condition.
  • An object is not closed. There is a hole in an object.
    - Close a hole by [Hole] command.
  • Lines or faces of two objects are overlapped the same position.
    - Move an object a little and retry.