It is one thing to model a glass or bottle, and another to create its contents. We will see how to create the liquid of lathed glasses.
Of course, we start with a lathed glass.
A simple lathed glass
We then copy and paste the glass. We now have two glasses in the same place. Select one and hide it (Cmd/Ctrl+3)
We now edit the profile we used for the glass and move and delete points to get our liquid.
Editing the profile. The glass on the left is just a reference
Move the base point to where we want the level of the liquid to be
Add a point where the level of the liquid touches the glass and delete all the unwanted points
We should have the profile of the liquid now
It is best to prevent both profiles from touching. Reveal the glass (Ctrl/Cmd+4) and in Outline shading, separate the liquid from the glass
That’s it. Now it is a matter of texturing the Glass and the liquid and we are set.
If you want to learn more, there is a far more detailed series of tutorials on this same subject by Chris Tyler.
