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I have been searching a lot on how to make an octahedron, but everything doesn't seem to work in the newest update, so I'm just asking if there's been some new way added to make them.

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3 Answers 3

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Or you can just bevel the default cube.

  1. Select all vertices
  2. Bevel the cube (check Clamp overlap)
  3. Remove double vertices Mesh > Clean up > Merge by Distance

enter image description here

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    $\begingroup$ When ur doing bevel just Press C (activate clamp) and just drag ur cursor out $\endgroup$
    – atek
    Commented Mar 28, 2020 at 17:25
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    $\begingroup$ Sure, the menu is just easier to see in a gif :). $\endgroup$ Commented Mar 28, 2020 at 17:30
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easiest way is with this addon "Add Mesh Extra Objects".

Once activated in "Blender preferences" > "Add-ons" you can do: "Add mesh" > "math functions" > "regular solid".

Once the object is created, open the configuration (loert left part of the screen) and choose "octahedron" as "source"

enter image description here enter image description here

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  1. default cube
  2. subdivide one edge loop vertically
  3. merge top and bottom vertices with "auto merge" turned on
  4. select all vertices and apply "to sphere"

enter image description here

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