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I am making an abstract sphere in blender and am having trouble with the random select feature. Basically I want to only select outer faces and not the "sides" as shown in this picture.

enter image description here

Does anyone know of a way that I can use the random select, but then ignore side faces of my model? (Without having to go through and painstakingly deselect them all by hand)

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migrated from stackoverflow.com Feb 2 '15 at 13:48

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  • $\begingroup$ I have an answer, but it depends on what you want to do with the selection afterwards as to whether it would work for you. $\endgroup$ – Ray Mairlot Feb 2 '15 at 14:13
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You can do this in two steps:

  • Select one of the triangular faces, press ShiftG (Select Similar) and choose Polygon Sides. Now all triangular faces should be selected.
  • Press space, type in Select Random and hit Enter. Now here comes the trick: You can switch from Select to Deselect mode in the Tool Shelf on the left hand side of the 3D viewport:
    enter image description here

If the Tool Shelf is not shown press T while your cursor is in the 3D Viewport.

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