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So I combined these 3 shapes together and you can see the edges are still there. how can I fix this? How can I smoothen all the edges in that one shape?

enter image description here

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    $\begingroup$ Somewhat Related $\endgroup$
    – batFINGER
    Aug 1, 2018 at 17:47
  • $\begingroup$ You might see metaballs for combining may spheres. $\endgroup$ Aug 1, 2018 at 20:12
  • $\begingroup$ Static image or an animation? $\endgroup$ Aug 1, 2018 at 20:13
  • $\begingroup$ Consider a sphere with bumps added by Proportional Edit. $\endgroup$ Aug 1, 2018 at 20:15

2 Answers 2

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It's easier to model the junctions in highly symmetrical objects like this than it seems.

Note that the origin of the spheres object never moves from the World origin. All moves are on the mesh, in Edit Mode.

  1. Starting with a 1/4 of a 16-segment, 8-ring sphere, aligned as shown, and an empty at the origin
  2. Assign a Mirror modifier in X, and an Array modifier, Count 3, with Object Offset based on the Empty, which is rotated in Z by 120 degrees. Check 'Merge' and 'First and Last' in the modifiers.

enter image description here

  1. In Edit Mode, G X move the mesh until the overlap is right for you
  2. Select all the entirely internal faces, (take a peek on the outside of the spheres, make sure there is no selection showing)

enter image description here

  1. Working on the 'original', delete the entirely internal faces
  2. On the partially internal faces, slide the internal vertices (G G) down their edges, until they meet their counterparts in the modifier-generated mesh. (Everything's symmetrical, you only have to do this half a dozen times)

enter image description here

  1. Once everything is neat and tidy, add a Z dimension to the Mirror modifier.

enter image description here

  1. After making a copy, and applying the modifiers, perhaps tweak. Here, I X> dissolved a few edges to get all quads, and (CtrlV > Smooth Vertex) eased the triple junction
  2. Throw on a Subdivision Surface modifier.

enter image description here

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  • $\begingroup$ Thank you so much!! But if you don't mind showing me how to do the first 6 steps in like a gif format or something? :3 $\endgroup$
    – Dallas B
    Aug 2, 2018 at 21:29
  • $\begingroup$ @DallasB I've had a play around.. a gif that's short enough isn't any clearer than the stills. Have a go, get stuck, and tell me where. If it's a small thing, I can edit the answer.If it's a big thing, we can post another question. People will be happy to help with specific 'how-to' s. P.S. Don't accept an answer if it hasn't worked for you yet! I would take no offence if you unticked it. $\endgroup$
    – Robin Betts
    Aug 3, 2018 at 8:10
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How did you combine the three spheres? The wrong way is to select the three spheres and then 'join' them. The reason it doesn't work is that this creates three sphere which sit trough one another (take a look in wireframe mode, shortcut z). The right way is to use the boolean modifier and set it to union. This creates one object with surface.

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  • $\begingroup$ how may I do that? If you don't mind explaining it? $\endgroup$
    – Dallas B
    Aug 1, 2018 at 18:32

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