What is the purpose of the forge cooler in crafting?

The forge cooler is a crucial upgrade for the forge in Valheim, as it allows you to craft higher-tier metal items and unlocks advanced crafting recipes. Without the forge cooler, your forge will be limited to basic crafting, preventing you from progressing in the game. This upgrade is essential for creating powerful weapons, armor, and tools, which are necessary for surviving in more dangerous biomes like the Swamp, Mountains, and Plains.\n\nThe forge cooler is part of the forge upgrades system, which includes other components like the forge bellows, anvils, and tool racks. Each upgrade enhances the forge''s capabilities, enabling you to craft more advanced items. To build a forge cooler, you need to gather specific materials: 10 fine wood and 4 copper. Fine wood can be obtained by chopping down birch or oak trees in the Meadows or Black Forest biomes, while copper is mined from copper deposits in the Black Forest.\n\nOnce you have the required materials, you can craft the forge cooler at a workbench. Place the cooler near your forge to activate its benefits. The cooler does not require fuel or maintenance, making it a permanent upgrade to your crafting setup. With the forge cooler installed, you can now craft items like the iron mace, iron armor, and other advanced gear that require a higher-tier forge.\n\nOne common challenge players face is locating copper deposits in the Black Forest. Copper nodes are large, dark rocks with greenish veins, often found near rocky terrain. Use a pickaxe to mine them, but be prepared to defend yourself against Greydwarves and other hostile creatures. Another tip is to bring a cart or portal materials to transport the heavy copper ore back to your base efficiently.\n\nFor new players, it''s important to prioritize building a forge and upgrading it as soon as possible. Early-game tools and weapons made from bronze or iron will significantly improve your chances of survival. Experienced Vikings should focus on optimizing their forge setup by placing all upgrades (cooler, bellows, etc.) in close proximity to maximize efficiency.\n\nIn summary, the forge cooler is a vital upgrade that unlocks advanced crafting recipes and enhances your forge''s capabilities. By gathering fine wood and copper, you can build this upgrade and craft powerful gear to tackle tougher biomes. Always ensure your forge is fully upgraded to stay ahead of the game''s challenges.