I’ve been updating an old model of mine and I’m not sure what I did to the mesh to make it have some edges more prominent than others. There are no modifiers.
The meshes are shown with the Wire displayed but not “Draw All Edges” and the one on the left is showing all edges because there is something different between them. The shading on the one on the right is different too.
After I saw Richard_Marklew’s post, I tried this: Select Plane.005 and do ctrl + a > Scale, add a Triangulate modifier to it. Apply it, then go into edit mode. Select everything in Plane.005, then go to Mesh > Faces > Tris to Quads. Then Mesh > Clean up > Limited Dissolve. That makes the edges match Cube.
Before doing the above, I was trying different things with the model. I wasn’t sure why the shading was different on the Plane.005 mesh, so I thought it might be because it was made with a plane instead of a cube like Cube seems to be. Without using the above method, I only went into edit mode for Plane.005 and tried to do Mesh > Clean Up > Limited Dissolve and the top of the building got really messed up. If I do the same for Cube, nothing is changed and it looks the same.
I’m not sure if it’s because some vertex isn’t welded correctly or something. One thing I did see was that you have a lot of reversed faces, which might be causing graphical problems in some way/how blender is showing your mesh. I’m not sure if you were planning on reversing those later, but good modeling habits are to clean those up right away before it gets unruly.
I even tried exporting the mesh to SketchUp and using a solid model analyzing tool to see what went wrong. The only thing it said was that the reversed faces needed to be fixed (there were a lot–64). If a model is in bad shape it usually says something like there are stray edges or the mesh isn’t actually solid, but it didn’t. That’s why I’m not sure what exactly went wrong with the top half of Plane.005. Sorry that I couldn’t figure it out.