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tetrakaidecahedron

The idea I have is to start from the tetrakaidecahedron, have the edges and create something organical as the photomicrograph below.

Photomicrograph of open-cell foamed urethane enter image description here

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Here is a different method using the same Truncated Octahedron.

Under the user preferences make sure you activate the default bundled addon Add Mesh Extra Objects.

Add a new mesh of the type Math Function > Regular Solid and from the presets at the bottom pick Truncated Octahedron.

Erase the edges dividing the large faces in half, then add a Skin modifier on top of it.

Tick the Smooth option. On top of it add a Subdivision Surface modifier.

You can now extrude individual vertex to create the "protruding spike" structures of the linked cell.

enter image description here

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    $\begingroup$ Now I get it :) I didn't saw the image from link, have an UV! $\endgroup$ – cgslav Mar 27 '18 at 18:16
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Under the user preferences make sure you activate the default bundled addon Add Mesh Extra Objects.

Add a new mesh of the type Math Function > Regular Solid and from the presets at the bottom pick Truncated Octahedron.

Erase the edges dividing the large faces in half, then add a Wireframe modifier.

Adjust the thickness as desired and add two Subdivision modifiers below it. The top one must be set to Simple, and the second one to Catmull-Clark.

Adjust subdivisions as desired for a more organic or geometric look.

enter image description here

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    $\begingroup$ I'm fighting with this one now - trying to find more automated way. It's a little bit trickier if you want to have flat external faces as in op image: imgur.com/GAFotvi $\endgroup$ – cgslav Mar 27 '18 at 18:01
  • $\begingroup$ Indeed. It always bothered me that the Wireframe modifier doesn't have an option for that; one generally has to manually inset and solidify faces. But I assumed he wanted to create what's illustrated in the other picture so I ignored that fact. $\endgroup$ – Duarte Farrajota Ramos Mar 27 '18 at 18:05
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    $\begingroup$ Solidify is still not enough as internal faces will be the same as external. Really though one for automation. Manually you will need to delete middle internal edge and merge at center groups of 3 vertices to have the same mesh. $\endgroup$ – cgslav Mar 27 '18 at 18:08
  • $\begingroup$ Yes it may result in self intersecting geometry, plus you have to "eyeball" the thickness values or end up with duplicate geometry. $\endgroup$ – Duarte Farrajota Ramos Mar 27 '18 at 18:13
  • $\begingroup$ @DuarteFarrajotaRamos would u up to make a screen recording video tutorial ? I'm a beginner and I'm kind of struggeling. Would be amazing $\endgroup$ – Elena Braida Apr 2 '18 at 18:03

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