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I would like to ask if there is a way to merge 2 objects together in a way that later it will not be separable if I hit "Separate by loose parts".

I am facing this problem when I am making a torch like object which consists of two objects, an icosphere and an elongated cube. When I do Ctrl+J to merge them, it's fine because it's only one object. But after I use the array modifier to make a lot of torches and then separate them by loose parts, I get all the icospheres and cubes separated too, not just the torches.

I have no idea how to solve this problem. I will appreciate any help. Thanks.

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  • $\begingroup$ Did you try to connect the meshes with at least 1 vertex? $\endgroup$ – Denis Apr 29 '15 at 16:28
  • $\begingroup$ No, I don't know how could I do that. $\endgroup$ – padr Apr 29 '15 at 16:36
  • $\begingroup$ Do your parts of the torch have to be visually separated? $\endgroup$ – Denis Apr 29 '15 at 16:48
  • $\begingroup$ Yes, but only visually. And I have tried to merge the two objects and then in edit mode I selected one vertice of the cube and one vertice of the icosphere, but I just wasn't able to connect them with Mesh -> Vertices -> Connect. $\endgroup$ – padr Apr 29 '15 at 16:54
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    $\begingroup$ I suppose Merge will be the appropriate one, or maybe creating an edge between the vertices? $\endgroup$ – Denis Apr 29 '15 at 17:00
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We can avoid the separation of the two objects after hitting the Separate by loose parts in these steps:

  1. Merge the two objects with Ctrl + J
  2. Go to Edit Mode and select 2 vertices, one belongs to the first object and the second belongs to the second object
  3. Merge the vertices with Alt + M
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    $\begingroup$ Can you add details of the steps for the solution and a screenshot so it will be crear for other people? $\endgroup$ – Denis Apr 29 '15 at 17:28
  • $\begingroup$ Corrected CTRL+M to ALT+M. Hope that was your idea. CTRL+M does nothing. $\endgroup$ – p2or Apr 29 '15 at 21:00
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I've been dealing with this problem in 2.8 and having no luck finding fixes online. But I've just found a fix, so I hope this comment might help someone in the same position. Have a look at a plugin named "Fast Carve". It has a great set of tools similar to Adobe Illustrator's Pathfinder tools. Including a Union button. Use this to join your 2 objects without needing to merge vertices. Hope this helps someone.

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