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I am new to blender, and I need help with a simple mesh manipulation.

This is a garden from Howl's Moving Castle and I am trying to build a basic structure of it.

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And this is what I have so far enter image description here

Outside looks fine but inside looks like this

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I need to find out a way to get rid of the yellow part and the red part as well. I have tried boolean modifier but it does not seem to get rid of the red part.

Can someone help me with it. I mean if there is an easier way, it will also be very much appreciated.

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  • $\begingroup$ Hello, maybe share your file so that we can help you? pasteall.org/blend (copy paste the link it will give once you've uploaded your file) $\endgroup$
    – moonboots
    Jun 17 at 7:14
  • $\begingroup$ Do you want to keep it non-destructive? If not, can't you simply apply the modifier and delete all the faces you do not want? Maybe it's not perfect and you have to do some mesh cleaning up afterwards... $\endgroup$ Jun 17 at 8:17
  • $\begingroup$ Did not know I can add a file. I will add a file in the future. Thanks. $\endgroup$
    – 김양욱
    Jun 21 at 7:57
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Maybe use another method to build it, create a circle object, put it on the side, use it to cut a shape on your dome with the Knife Project tool (select the circle object, shift select the dome object, go in Edit mode then go into the Mesh panel > Knife Project):

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Clean up the cut shape with some X > vertices and edges dissolve, make it go down to the bottom:

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Extrude, then symmetrize, etc:

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  • $\begingroup$ Thanks. This gives me more precise result. $\endgroup$
    – 김양욱
    Jun 21 at 7:56
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If you use the Boolean Modifier set to Union (and unfortunately always a bit depending on how the vertices are placed) you can almost immediately get the result you want. The geometry might not be perfect since the Boolean Modifier creates bad geometry most of the time, but if you apply it you can always clean up the mesh.

boolean_union

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  • $\begingroup$ Thank you for the reply. Did not know I could do it with Union. But boolean sometimes does not give me exact result that I want... $\endgroup$
    – 김양욱
    Jun 21 at 7:55
  • $\begingroup$ @김양욱 I know... as I said, it's sometimes depending on how well the vertices are placed and the geometry isn't always great and needs a lot of cleaning afterwards. Some people even give the advice never to use the Boolean modifier. But I usually take it as a starting point from where I can further refine the mesh. $\endgroup$ Jun 21 at 7:59
  • $\begingroup$ I see. I will take your advice in the future for some other projects if needed. Thanks ) $\endgroup$
    – 김양욱
    Jun 25 at 9:49

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