How do you craft a blast furnace for advanced crafting?

Crafting a blast furnace in Valheim is a crucial step for advanced crafting, as it allows you to process higher-tier metals like black metal and Flametal. To unlock the blast furnace, you must first defeat Moder, the fourth boss in the game, located in the Mountain biome. Moder drops the Dragon Tear, which is required to craft the Artisan Table, a prerequisite for the blast furnace.\n\nOnce you have the Artisan Table, you can craft the blast furnace. The recipe requires 20 Fine Wood, 10 Iron, 20 Stone, and 5 Surtling Cores. Fine Wood is obtained by chopping down birch or oak trees in the Meadows or Black Forest biomes. Iron is mined from Muddy Scrap Piles in the Swamp biome, and Stone is gathered from rocks found throughout the world. Surtling Cores are looted from Surtlings in the Ashlands or found in Burial Chambers in the Black Forest.\n\nTo build the blast furnace, place the Artisan Table in a secure location, preferably near your main base or smelting area. Open the crafting menu and select the blast furnace. Ensure you have the required materials in your inventory. Once placed, the blast furnace will allow you to smelt black metal scraps into black metal bars, which are essential for crafting high-tier weapons and armor.\n\nOne common challenge is gathering enough Surtling Cores, as they are relatively rare. To farm Surtling Cores efficiently, consider exploring the Ashlands biome, where Surtlings spawn frequently. Alternatively, you can create a Surtling farm by digging a trench near a Fire Geyser in the Swamp biome. Surtlings will spawn and die instantly in the water, dropping cores and coal.\n\nAnother tip is to optimize your smelting setup. Place the blast furnace near other crafting stations, such as the forge and workbench, to streamline your crafting process. Additionally, ensure your base is well-protected, as the blast furnace and its materials are valuable and may attract raids from enemies.\n\nIn summary, crafting a blast furnace requires defeating Moder, gathering specific materials, and setting up the Artisan Table. Focus on efficient resource gathering and base defense to maximize your progress. With the blast furnace, you can unlock advanced crafting options and prepare for the endgame challenges in Valheim.