I was able to pin my own greeble material in Blender, however, not in UE yet. I’m thinking of doing the same with Chebychev voronoi but i do not know how to figure out the logic the UE material editor. Which nodes in what sequence would create a similar, tileable texture?
I found solely a "Vector Noise: Voronoi " node, but from this point on the whole thought process is lacking in direction, since it’s barely the same as in Blender.
I can tell you, there is a Voronoi node, just choose noise, and select Voronoi in the details. But, then look at your shader complexity: 400 before you even start.
It needs to get wrapped around its own meshes, otherwise parts will be stretched and look like a 90’s game texture. I sat there yesterday trying to bake the mat from a Blender Plane into a texture, but that’s probably not the way to go, because of the stretch. It could be tiled over any mesh though, if the Greeble structure is symmetrical.