I'm trying to connect multiple vertices together and make a mesh out of it. Do you have any idea why some vertices don't turn into a mesh but get this gray color?
Any tips? thx
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$\begingroup$ Those aren't vertices, they're faces and it's difficult to say without seeing your blend file which you can share here blend-exchange.com. $\endgroup$– John EasonCommented Jan 7, 2023 at 9:41
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$\begingroup$ This question would be much easier to understand if you showed us clearly which vertices (before the attempted fill) , and you told us how you attempted to fill between them. $\endgroup$– Robin Betts ♦Commented Jan 7, 2023 at 9:55
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1 Answer
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The mesh of your model has a few problems. There are
- duplicated vertices
- overlapping faces
- overlapping edges
- flipped normals/faces
You can see the problems better when you activate the Face Orientation Overlay and add a Subdivision Surface modifier:
As you can see now there are
- gaps
- curved overlapping edges
- poles with more than 5 edges
- visible orange edges (overlapping edges)
How to Fix It
In Edit mode
select everything A and delete all faces (X > Delete > Only Faces)
select everything A and merge vertices (M > Merge > By Distance)
re-create the faces.
- select 4 vertices and press F to create the new face.
- if the face is red, you can flip it with Alt+N > Normals > Flip.
- if the direction of the edge flow is clear, it is also sufficient to select only 2 vertices in the direction (or the edge) and press F. In most cases, another press on the F key creates the next face. The "loop" part of your model can be filled quickly by spamming F.
To maintain a quad mesh topology you need to add a few more edges here and there. You can subdivide an edge (menu Mesh > Edge > Subdivide) or cut the face with the knife tool (K).
remove the overlapping edges (one at the top, another one at the bottom)
