I cut the original model into 2 parts in Bambu Studio. The full project file is included along with 2 separate stls, for those that want. There are connectors included for lining up the parts once printed; pegs on the base with receiving holes in the hand bottom.
The 3mf file is sliced with 4 walls, gyroid infill (25%), and organic tree supports. I have not yet had time to print this myself, but it's on my short list. Just wanted to post this ahead of time as I saw a comment (from @Damien_1543321) where this split was requested in April that had not yet received a response from the creator.
The author remixed this model.
The skeleton hand has been separated from the base.