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I have half a sphere together with a full sphere as separate objects in a blender file. I load them from a X3D file I generate externally. I get them as something, which seems to be something like a wire-frame to me (maybe different what Blender calls wire-frame-objects). Instead of this wire-frame I want a closed surface – one for the sphere and one for the half sphere.

enter image description here

The problem is that I am a total beginner in Blender. What I have tried so far is the following:

1) select one of the objects (let's say the full sphere, see first image)

2) ⎇ AltC -> select Mesh From Curve/Meta/Surf/Text

3) select Edit Mode

4) A then ⎈ CtrlF

My hope was that Blender only fills the faces orthogonal to the normals of the sphere. Unfortunately it does not work like I hoped. Could someone help me a bit. I am a total beginner to blender and mostly do not know how to access the options, if someone could explain it for an absolute beginner, this would help me a lot.

I attached a blend-file:

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  • $\begingroup$ Plz attach your file here blend-exchange.giantcowfilms.com for inspection $\endgroup$ – atek Mar 9 '17 at 14:31
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You probably have curves. So when converted to mesh, they are disconnected rings or arcs but this is not visible as vertices overlap.

In edit mode:

  • select all
  • remove doubled vertices (you find that in the toolshelf on the left using T to make it appear, or press W to bring up the menu to select it from)
  • then once all is selected hit F

I confirm this hypothesis after a test on your file.

enter image description here

Concerning the half sphere, same principle but you'll have to remove the unwanted face after that:

  • Switch to face selection mode CtrlTab, then choose 'face'
  • Select it RMB
  • Delete it X then 'only face'

enter image description here

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  • $\begingroup$ This works very well for the full sphere. But in fact I must fill just the faces, because if I apply this trick to the half sphere also the volume is filled I think. Could you explain how to fix this, such that I can accept your answer? $\endgroup$ – DonkeyKong Mar 9 '17 at 15:02
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A whole sphere can't be filled by using ⎈ CtrlF. Select some of the faces but make sure they aren't in a continuous loop(you shouldn't be able to go around the sphere on your selected faces). Repeat this as much as possible then fill in the leftovers manually using F.

Or just select each face one by one and press F each time.

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