Is there any way to remove this portion? I only know extrude cut. I wish to know any other way.
If you want bottom to be flat, then you can use Cut with Surface option. Attached is the image file for reference.
You could try "Delete Face" - "Delete and Patch". But I dont know your design intend. If you want a flat bottom why not extend the surfaces and then use the "Cut-Extrude"?
It would be easier to do a
Loft base to top.
Extrude cut the cavity.
Shell the wall thickness removing the bottom face.
Thanks for the short method.
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