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How can I deform one edge or multiple edges of a plane or cube so they are tapered in and rounded equally?

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3 Answers 3

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Alternatively if you want it done with actual curves

  1. Add a new plane object
  2. Enter edit mode
  3. Subdivide it with W > Subdivide only once
  4. Convert it to a curve with Alt + C
  5. Change the curve type to Bezier in the tool shelf
  6. Change it to 2D type curve in the properties window
  7. Select the central vertex in the middle of the sides only
  8. Change their handle type to Auto
  9. Now scale them down towards the selection center and adjust as desired

enter image description here

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While in Edit mode, select the plane and subdivide it, by pressing W>Subdivide. You can press F6 to adjust the number of cuts. Then, use the Proportional Editing tool, enabled by pressing O, or by going to the 3D View header, and set it's falloff to Sphere.

enter image description here

Now, select the center face/vertex and scroll the mouse so the circle doesn't contain the corner vertices and scale to taste.

enter image description here

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  • $\begingroup$ it's what i want but it dose not give smooth rounded edge even when i increased the division points better results if i just subdivide olny the edge but still no smooth enough. $\endgroup$ Jun 5, 2016 at 16:43
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As an alternative to the answers above you may do it using subsurf modifier and edge crease tool.

Add a plane and subdivide it once with W-->Subdivide. Scale some vertices to create the desired shape. Give it a subsurf modifier with some subdivisions. In Edit Mode select all the edges around the plane and press Shift+E,1 to crease them. enter image description here

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