It is a mesh peeling tool in different shapes.
You can see the project with the Youtube link and learn how this process is done. Video language is Turkish and English subtitles are added.
Youtube link : https://www.youtube.com/watch?v=G-kCSU6MXCQ&t=163s
Many aspects of the project have been developed with the Unity Job System(Multithreading).
It is a suitable project for models with no thickness.
Transform Reset (Editor tool to reset transform(pos, rot, scale) with button) : https://assetstore.unity.com/packages/tools/utilities/transform-reset-31313
UnityHFSM (Hierarchical Finite State Machine) : https://github.com/Inspiaaa/UnityHFSM
NaughtyAttributes (Odin Inspector alternative) : https://github.com/dbrizov/NaughtyAttributes