>>Probably it will be enough to allow (checkbox) recalculate density in stead of volume when mass is changed and copy as a custom material ( "Object name" for example) to style name.
Both features has been added
Can we imagine (maybe in another Script)
Selection some volumes and their general Center of Mass
When we move a volume(s) the general Center of Mass moves in the same time ?
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Pilou
Is beautiful that please without concept! My Gallery