How to have a clean slice With the Booltool addon. Im slice the mesh to get a top part separate. Im looking for this type of battery opening.


I tried to add a sphere and with booltool i tried to slice the mesh. The mesh get extracted with extra edge and the base mesh got union with it. Any other cool way to have slice the mesh.
I tried this with booltool addon (gif)
Move your Boolean Modifier above your EdgeSplit modifier and move the cutter Sphere just a tiny bit in a y-direction so there are no overlapping vertices.

If you want a copy of your cutter then you can copy it with Shift+d and in Object Properties under Viewport Display change Display As Textured.