Has anyone managed to make a generic "extrude" mesh surface operation in geometry nodes?
I want to do the equivalent of taking a flat grid, extruding it up 1000 units, and down 1000 units; such that Im left with three copies of the surface connected by faces.
The closes I've come is this; which works but isn't generic. This generates a mesh from curve (using a line profile), then makes a cube and rearranges the faces to fit.