Tile Crank

A tile crank is a piece of kiln furniture used to hold a stack of ceramic tiles apart from one another while they are fired in a kiln, so that several tiles can be fired together under even heat without touching. Its ledges are tilted upward so that they rest only against the unglazed back of each tile, leaving the tile front edge free so the tile can be glazed all the way to its rim before firing. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/