This tool replaces mined-out tiles of adamantine spires with fresh, undug adamantine walls, ready to be re-harvested. Empty tiles within the spire that used to contain special gemstones, obsidian, water, or magma will also be replaced with fresh adamantine. Adamantine spires that were originally hollow will be left hollow. See below for more details.
hollow to fill in naturally hollow veins too, but be aware that this
will trigger a demon invasion on top of your miner when you dig into the region
that used to be hollow. You have been warned!