I think I've worked something out for the Materials, I've got the first item (Barrel) to share the bluesteel material with the default pack. See it here
If you get a chance hop on Discord and I'll explain the process.
My apologies, I logged off for the night right after my last reply. But I'd be happy to learn about it tonight if you have the time to spare (about 12 hours from when this was posted)
