To make smooth stone in Minecraft, follow these steps:
1. **Mine Cobblestone**: First, you'll need to mine cobblestone. You can find cobblestone blocks naturally generated in caves, ravines, and mineshafts, or you can create them by mining stone blocks with a pickaxe.
2. **Craft a Furnace**: Use cobblestone to craft a furnace. Place cobblestone blocks in a crafting table or your 2x2 crafting grid to create a furnace. You'll need eight cobblestone blocks arranged in a square with the center empty.
3. **Place the Furnace**: Once crafted, place the furnace on the ground in your Minecraft world. You can place it wherever you like, but make sure you have enough space around it for ventilation.
4. **Add Fuel**: Open the furnace by right-clicking on it (PC) or pressing the button indicated in your controls (console or mobile). Place a fuel source, such as coal, charcoal, wood, or other flammable items, in the bottom slot of the furnace interface.
5. **Place Cobblestone in the Furnace**: In the top slot of the furnace interface, place the cobblestone blocks that you want to turn into smooth stone. You can fill all of the slots with cobblestone if you have enough.
6. **Wait for Smelting**: Close the furnace interface, and wait for the cobblestone to smelt. You'll see flames in the furnace and hear crackling sounds as it works. Each cobblestone block will smelt into one smooth stone block.
7. **Collect Smooth Stone**: Once the smelting process is complete, open the furnace again. You'll find the smooth stone blocks in the bottom slot of the furnace interface. Move them to your inventory.
That's it! You've successfully made smooth stone in Minecraft. Smooth stone is a useful building material with a sleek appearance, perfect for creating floors, walls, and other decorative elements in your Minecraft builds.