How do I craft a stone oven to process metals faster?

Crafting a stone oven in Valheim is essential for processing metals like copper, tin, and iron more efficiently. The stone oven, also known as the Blast Furnace, is a late-game crafting station that allows you to smelt metals faster than the standard Charcoal Kiln and Smelter. To unlock and craft the Blast Furnace, you must first progress through the game and gather specific resources.\n\nTo begin, you need to defeat Moder, the fourth boss in Valheim, located in the Mountain biome. Defeating Moder grants you the Dragon Tear, a key item required to craft the Artisan Table. The Artisan Table is a crafting station that unlocks advanced structures, including the Blast Furnace. Once you have the Artisan Table, you can start gathering materials for the Blast Furnace.\n\nThe Blast Furnace requires 20 Fine Wood, 10 Iron, 20 Stone, and 5 Surtling Cores. Fine Wood can be obtained by chopping down Birch or Oak trees in the Meadows or Black Forest biomes. Iron is found in the Swamp biome, typically inside Sunken Crypts, which require a Swamp Key to access. Stone is abundant and can be gathered by mining rocks or breaking boulders. Surtling Cores are found in Burial Chambers in the Black Forest or by defeating Surtlings in the Ashlands biome.\n\nOnce you have all the materials, place the Artisan Table in a suitable location near your base. Open the crafting menu and select the Blast Furnace. Place it near your Smelter and Charcoal Kiln for optimal efficiency. The Blast Furnace works similarly to the Smelter but processes metals twice as fast. For example, it takes 15 seconds to smelt one Copper Ore in a Blast Furnace, compared to 30 seconds in a standard Smelter.\n\nA common challenge players face is gathering enough Surtling Cores. If you''re struggling to find them, consider exploring multiple Burial Chambers or farming Surtlings in the Ashlands. Another tip is to ensure your Blast Furnace is protected from enemy raids by building walls or placing it inside a secure structure. This prevents damage from Greydwarfs or other hostile creatures.\n\nTo maximize efficiency, pair your Blast Furnace with a steady supply of Coal. Coal can be produced using the Charcoal Kiln by burning Wood or Core Wood. Alternatively, you can gather Coal from Surtling spawners in the Swamp biome. Keep your Blast Furnace stocked with both metal ores and Coal to maintain continuous production.\n\nIn summary, the Blast Furnace is a game-changing upgrade for processing metals in Valheim. By defeating Moder, crafting the Artisan Table, and gathering the necessary materials, you can significantly speed up your metal production. Always protect your Blast Furnace from enemies and ensure a steady supply of Coal for optimal results. With these steps, you''ll be well-equipped to tackle the challenges of the late game and craft powerful gear for your Viking adventures.