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I have a u shape and i want that 2 vertex join and make a arc. In the image i have shown the u shape black color and red color arc. Can we join the 2 green color pointed vertex and make a arc. Any method to join them and make a arc quick and simpleenter image description here

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  • $\begingroup$ maybe related: blender.stackexchange.com/questions/21698/… $\endgroup$
    – user1853
    Commented Dec 21, 2016 at 17:37
  • $\begingroup$ Remove doubles is very handy when merging many different objects in various ways $\endgroup$
    – J Sargent
    Commented Dec 22, 2016 at 4:03

2 Answers 2

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Use Spin tool and create the arc-shaped top based on the existing geometry.

  1. Select top vertices which should serve as a base for the arc. Snap cursor to them with Shift+S menu. Note that spinning will happen based on 3D cursor position and the current orientation of the view in the viewport.
  2. Deselect one of the vertices leaving only one selected (to make spin happen from one origin).
  3. Press Alt+R to execute the tool (or find it on the Toolshelf). Adjust Angle in operator's options to 180 degrees and set amount of steps according to your mesh.

  4. Make sure to remove double vertices with W menu.

    GIF create arc

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  • Add circle enter image description here
  • Select the left vertex and shifts and cursor to selected enter image description here
  • Choose 3dcursor as pivot point enter image description here
  • Select vertices enter image description here
  • Then scale with -1 along the x-axis
  • Select the right vertex and shifts and cursor to selected enter image description here
  • Select vertices enter image description here
  • Then scale with -1 along the x-axis enter image description here
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  • $\begingroup$ Thanks for replying but i have made the u shape just want to join the top 2 vertex and make arc shape. I tried the spin also but i want much more flexible then that $\endgroup$
    – atek
    Commented Dec 21, 2016 at 17:35
  • $\begingroup$ do you already have the arc? if that's the case, then you can merge with alt+m in edit mode $\endgroup$
    – Faceb Faceb
    Commented Dec 21, 2016 at 17:36
  • $\begingroup$ I have the u shape only and want to create that arc with the u shape top 2 vertex as shown in image $\endgroup$
    – atek
    Commented Dec 21, 2016 at 17:37
  • $\begingroup$ what is the radius of the arc? $\endgroup$
    – Faceb Faceb
    Commented Dec 21, 2016 at 17:38

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