Joining Two Faces

[Heinz Schmiedhofer]

I have a mesh with two coplanar, unequal quads. One edge of the smaller one is part of an edge of the larger one.

In order to join them, I am currently doing this:

• subdivide the larger edge for two more vertices
• snap these onto the location of the smaller edge’s endpoints
• select the two faces
• press delete/x and choose ‘dissolve faces’

Is there a more straightforward way?

[Adrian Bellworthy]

Hey @strudel,
I’m not sure I understand what or why!
Do you mean non-coplanar?

Can you share an example image? 

[Heinz Schmiedhofer]

Hi Adrian, my faces are co-planar. They are elements of the same plane. I want to create an n-gon out of two adjacent quads.

P.S. I created an image, but for inserting I interestingly need a URL. Inserting from clipboard or from a local disk doesn’t appear to be supported with this forum.

[Adrian Bellworthy]

You should be able to add the image using the tool bar…

As long as it is the correct format and not too large.

Once you select and upload the image it will appear in the right sidebar, you then need to select it there to use it.

[Heinz Schmiedhofer]

[Adrian Bellworthy]

Ok I see now…

If they are two separate objects (floor and floor.001 ?) Then in object mode select them both and use CTRL+J to make the mesh one object.
You can then add two edge loops with CTRL+R on the larger face for two more vertices to snap these onto the location of the smaller edge’s endpoints.
Then press M and merge by distance.

[Heinz Schmiedhofer]

Thanks, Adrian. Being able to snap-drag loopcuts to where i want new vertices on my edges definitely helps.

However, on a slightly different note – for some (not all) faces I am now getting points on edges instead of loopcuts when pressing Ctrl-R (loopcut shortcut) in edit mode. See the yellow points on the right side of my mesh. Is this a bug or a feature?

[Adrian Bellworthy]

That is because it’s an Ngon, the loop cut tool will only work on quads.

The loop cut tool is an edge tool, it works by subdividing edges then joining them with an edge.
that’s why it still subdivides the edge, but has no opposite vertices to join to.

[Omar Domenech]

Edge loops don’t go through Ngons, you need to have quaded faces for the loops to pass through.

So instead of having a big face like the one on the right of the image, you need to have quaded faces like the one on the left of the image. The loops have to be there to get the supported geometry for the loops to work when you activate the loop cut tool.

[Heinz Schmiedhofer]

Ahhh, of course. I should have figured that myself.

Thank you very much, Adrian!  🙂

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