I'm new to blender and have run into an issue trying to make a glass of liquid. I duplicated the middle of the cup to make the liquid inside and continued developing the liquid. Only when I noticed that the liquid wasn't appearing as I expected through the glass did I think there might be a problem with the glass frame itself.

Wireframe of glass

You can see that the top two rows of vertices appear as you'd expect but after those only the outer vertices are present, the inner ones have disappeared. I think I duplicated correctly in the first place but am not sure.

It appears wrong in the sense that the glass looks frosted rather than like a pure glass.

Render of liquid

My questions are: what have I possibly pressed to have caused this? And: is there any way to get these vertices back?

  • $\begingroup$ Is the first screenshot a wireframe of the glass and the liquid? I think you forget to duplicate the vertices before separating them. $\endgroup$ Nov 9, 2021 at 9:17
  • $\begingroup$ The correct steps are SHIFT+D then P>Separate by selection. You may have forgotten to do the SHIFT+D. $\endgroup$ Nov 9, 2021 at 9:19
  • $\begingroup$ @mqbakamqbaka Sounds likely. Does just D take a hard copy rather than a duplication? Like it re-associates those vertices with the new object, removing them from the old one? And is there any way to undo this without re-starting the whole cup? $\endgroup$
    – Moreland_J
    Nov 9, 2021 at 9:56
  • $\begingroup$ No. D doesn't do anything, in 2.7 it was the shortcut for drawing in the grease pencil but now it's not assigned to any actions as far as I know. And you cannot really undo it. You can rejoin the two objects by pressing CTRL+J and then fill the cup back with geometry from the liquid. $\endgroup$ Nov 9, 2021 at 10:02
  • $\begingroup$ Thanks @mqbakamqbaka, I have since redone the cup and recycled the liquid from the old attempt, thanks for the response! $\endgroup$
    – Moreland_J
    Nov 16, 2021 at 23:19


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