So, this gets unlocked when discovering Adamant Alchemy. Is this worth crafting more of, or is it of limited use? I did make two more, and have three now, not sure if that at was wise or not. The info screen says it is used to construct buildings, but I've not seem it used anywhere yet.
I always try to grab a few extra of these special items just in case they roll back around, but didn't know if I should keep making it or if I was wasting my resources.