Modeling workflow for symmetrical indented plane I'm fairly new to blender and don't have a good overlook of what can be done with the modifiers yet. Currently I have a plane with a more or less centered ridge, now I wanted to make an X-crossing by copying that plane, turning it around 90 degrees and somehow combining it with the first one. However it don't find a way to do this.

Basically, I'm looking for function that aligns an object to the axis minima of 2 other objects. Or any other way to accomplish this.

Okay, here are some pictures to better show what I would like to acquire.

Assume I have a plane like this:


Now I copy this plane and rotate it around 90 degrees around the Z axis. The result looks like this from above:

And like this from below:


These two planes are joint to get a single object. Now what I would like to have is something like this:


This was done creating a second plane with a higher vertex count and using shrinkwrap. However, the curves in the "rift" are a bit smoothed and not as sharp as in the combined origin mesh. When I use projection for shrinkwrap I get artifacts.

This was the best I was able to get. Is there a more simple method and/or a method which is more exact, meaning I get the sharp corners where the "rifts" are crossing?
starting with two objects like you describe:

Add a shrinkwrap modifier

to get something like this:

Some faces look beveled because the quads forming the mesh cannot accommodate the deformation properly.
To correct the topology of the edges in question, there are two options:

1: Press Ctrl T to triangulate the mesh.



2: Manually subdivide the offending faces selecting vertices and using J to join the edges.