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i have a simple question for you, i need to "merge" 2 parts of the same object in edit mode where the faces collide, here a simple example to better explain the desiderata: enter image description here

IS it possible in Blender with a simple operation? or do i have to recreate the whole parts to make them collide correctly?

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Recorded a quick video showing how to easily do it.

The steps are:

  • Create two loop-cuts on the smallest/thinnest part.
  • Snap the new loops along the X axis(or whatever axis are appropriate for your mesh) to the mesh you want to merge it with.
  • Select the faces your mesh is going through and create an inset face.
  • Scale down the new faces and snap the edges into the thin piece.
  • When all edges/vertices are overlapping use Alt+M and select "By Distance" to merge overlapping vertices.
  • Finish off by either manually selecting and deleting the interior faces or use Select - Select all by trait - Interior faces to select them and delete
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  • $\begingroup$ Thank you, this is a good solution, but consider that my image is composed by only 1 object. $\endgroup$ – Tharnadar Jan 24 at 15:20
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this is a simple topology, just add there a few more edges and merge the vertices. You can use voxel remesh as that is just one click operation but it makes the next modeling impossible in a classic way.

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