SculptTree feels quite difficult and uncomfortable to manage.
So, when the work is completed for each part, the sub-trees are temporarily grouped with Merge Sub-Tree (no boolean), and whenever modification is needed, the Object-ify (Separate) function is used to perform separation work.
---------------------------------------------------------------------------------------------------------------------------------------------------
As the work continues, there is a part that needs to be cut out as a whole, so without using Object-ify (Separate)
I used Cut Off Tool.
The result is an object with an empty inside, such as an image (left-below).
It was not the result I wanted, so after restoring it to its original state
This time, after separating the parts with the Object-ify (Separate) function, I did the same work as before using Through All Volumes of Cut Off.
This time, the results came out as i wnat it is. (right-below)
It seemed to be the same, but the result was completely different.
The question is...
Is it a bug of the Cut Off tool?
Or is it due to some mechanism of Merge Sub-Tree(no boolean)?