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i apologize in advance because im sure my question isn't very clear. Basically when I extend these faces out:enter image description here

i want this face:enter image description here

and this face:enter image description here

To be merged so it would look something like this:enter image description here

Except i did that manually is there a way to have that happen automatically? Also its probably important to mention that im new to blender, and not very good at explaining. Any help would be appreciated!

Edit: When i say new to blender i mean you might have to explain more than usual.

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    $\begingroup$ I'm not sure there's any trick to do it, you can enable the snap option/ vertex mode, enable the Auto Merge option, extrude, let it snap, then delete the inner faces $\endgroup$ – moonboots Oct 13 '20 at 17:23
  • $\begingroup$ How would i go about enabling auto merge? $\endgroup$ – xXMAZEEXx Oct 13 '20 at 19:23
  • $\begingroup$ on the top right of the 3D view > Options > Auto Merge $\endgroup$ – moonboots Oct 13 '20 at 20:01
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Use Extrude Manifold tool (instead Extrude) just select front face and move forward with Snap to Vertex ...

enter image description here

... than move it up.

enter image description here

Since faces around becomes non-plannar and internally a triangulation happens in unexpected direction it is better to search for Quads to Triangles operator (that does tris in shorter distance) ...

enter image description here

... or you can use Knife tool to triangulate manually by longer edge.

enter image description here

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