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I am trying to make a through hole using inward extrusion. I enterd into edit mode, then I drawed an outline of my hole using knife tool.enter image description here

then I turn into wireframe shading, rotate my view an select snap to faces and then extrude the hole outline inward enter image description here

so the hole is created successfully, but I still have a face at the hole bottom. I can select this face separately enter image description here

But If I try to delete it, I siply delete this face (I can't select it anymore after deleteting), but I do not see through hole, so the basic cube face is still here. So how to remove the hole bottom?

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  • $\begingroup$ it is possible that this "swiss cheese modifier" might be helpful to look at, though it's a script. $\endgroup$
    – uhoh
    Commented Sep 18, 2019 at 5:59

1 Answer 1

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You can use the faces of a mesh to dig a hole in the same mesh, using the ctrlF > Intersect (Boolean) tool. Just push the face a bit further down. Then in the Operator box choose Difference and Solver > Fast.

enter image description here

Or use a second mesh:

enter image description here

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  • $\begingroup$ Thanks, mate, solved it! Pictures too!? y'sh'dna <3 $\endgroup$
    – pixelpax
    Commented Oct 10, 2021 at 23:01

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