To make glass in Minecraft, you’ll need some sand, a furnace, and a fuel source for it. Step 1: Interact with your furnace. Step 2: Put a fuel source like wood or charcoal in the bottom square.

BOY:Yeah. GIRL:Yeah. CURIOUS CAT:Well, glass starts off as sand. CURIOUS CAT:'A bit like the sand you might find on a beach. But to make clear glass, a special sand called Silica Sand is used.