Boolean Modifier is one of the important Modifier which we use very often in blender Let's Discuss the working of Boolean modifier Add Modifier :- There are mainly three points to discuss 1. Intersect 2. Union 3. Difference There must be Two Mesh One Main Where operation Perform Second For Formal Use for cut for Desired Shape. We first select the Object and then in Modifier tab select the Boolean modifier Also there is one another mesh for complete the process Choose the perfect cut out mesh you want then apply one of three boolean in the Box Note :- In These Pictures you see the difference in wire frame mode non highlight part that is black and highlight part Orange color show that Difference. This difference show that after apply boolean modifier the highlight part is the Part of mesh and non-highlight part will may may be deleting portion of mesh after completing Intersect:- Difference:- Union:- ...