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enter image description here I want those 2 faces to be on the same plane only by moving A on the C axis and B on X/Y/Z. I tried to resize with transform orientation to normale but I cannot lock the other vertice position. Maybe a tool displaying the normal numerical values of the two face would help. The rest of the mesh is currently hidden.

Is there a tool or technique to do that ?

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  • $\begingroup$ If the right face (viewer's right) is not planar, it cannot be made planar by moving A along C (and B won't affect it). To move B to the same plane as the right face, select the right face, snap cursor to selection, ctrl alt space create custom orientation, then select B and scale 0 in z to cursor. $\endgroup$
    – Nathan
    Commented Jan 23, 2021 at 17:08
  • $\begingroup$ WHen I select a single vertex, with the right face as the transform orientation, scaling do not affect the single point B. $\endgroup$
    – Syl
    Commented Jan 23, 2021 at 17:40
  • $\begingroup$ I haven't found a good solution, so I just displayed huge normals and did my best to align them. $\endgroup$
    – Syl
    Commented Jan 25, 2021 at 10:06

1 Answer 1

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I'm confused with the question so here are a few options.

To flatten the faces on the $Z$ axis, for example, select all vertices, scale them to zero (press S + Z+0)

You can modify the coordinates for any point numerically. Enter edit mode (↹ Tab) enable the Sidebar (press N) to access the Item Properties panel.

You can see the Local and Global coordinates and manipulate them at will.

enter image description here

So you can flatten the faces first and then, with all vertices still selected, you can set them at the correct coordinates numerically.


To move a vertex along an existing edge, use Vertex Slide (⇧ Shift+ V)

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  • $\begingroup$ My problem is not so much to move the vertex, it's to put the 2 face on the same plane. They are supposed to be one flat surface. $\endgroup$
    – Syl
    Commented Jan 25, 2021 at 10:07
  • $\begingroup$ As stated on the answer, you can manually set the vertices to be at a specific value on the global the z axis. To flatten al vertices. Select them and scale them on the z axis to zero (press S Z 0), while still selected input the desired value in the z axis using the side panel $\endgroup$
    – susu
    Commented Jan 25, 2021 at 11:08
  • $\begingroup$ See edited answer $\endgroup$
    – susu
    Commented Jan 25, 2021 at 11:21

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