Crucible

A crucible is used for making sand into glass, crafting objects from glass, and smelting a metal bar into nuggets (or vice versa).
==How to Use==
Place a single piece of coal into the crucible, light it with a firebrand or a torch, then right click it to walk close to it. Then simply craft objects that require the crucible.
Once built, Inspecting the crucible will not display quality; the quality of the materials used to build the crucible and fuel you use on it have no effect whatsoever on items crafted with it.