Hey so im making this game prop, i did a slice operation on a peice but it seems to be apart of the same piece and not one by itself. how do i make it a piece of its own? so i can bake it perfectly help would be really appreciated 
Select the part of the mesh and press āpā or Mesh->Separate->Selection.
It is alredy a sperated but I think shares the same object data because of which it still remains as the same object but as a sliced piece
What do you mean it still remains as the same object? You cant move it separately away?
Maybe you make a parent/child relation, so it looks in the outliner.
Checkout 5_lp and 10_lp they have another piece inside them
The blend file:
https://drive.google.com/drive/folders/1gsXIk9QcHmncZzK76VUN5LvY9m3-DkpJ?usp=sharing