How does the Set Material Index node work? I placed it after the generated cone mesh, but it does nothing..
Just briefly for further explanation:
Set Material defines a new material for the selected geometry. This node is basically used when a geometry is created with Geometry Nodes, because for the geometry created in this way there is no assignment to a material before.
However, if you use an existing geometry (for example, with
Object Info), then you can use the
Set Material Index node to apply a specific material from the previously assigned materials to the geometry (or parts of it).