Hey nandaru,
I assume you are talking about this project that you mentioned in a duplicate forum thread.
You seem to have figured out how to generate the mesh with a different geometry.
Removing overlap is important between solid objects if you face such an issue again. You can either use fix interferences option to do this automatically, where you would not have control on which object acts as the tool body and which body acts as the target body.
If you use Boolean subtraction, you would have control over which body to use as tool and target.
Let us know if you need further support on this.
Best,
Satvik