POE Blacksmith's Whetstone is a currency item that can be obtained by trading with certain vendors. It can be used to upgrade magic and rare items to a higher rarity. It can also be used to increase the quality of certain items, such as weapons and armor, which can result in additional bonuses.

Obtaining POE Blacksmith's Whetstones is fairly easy. They can be obtained from certain vendors in the game, as well as from certain monsters. They can also be bought from other players or through the in-game shop.

Spending POE Blacksmith's Whetstones is fairly simple. They can be used to upgrade any magic or rare item to a higher rarity. They can also be used to increase the quality of weapons and armor. Increased quality can result in additional bonuses, such as increased damage or increased defense.

POE Blacksmith's Whetstone is a great way to customize and enhance your character to make them more powerful. With proper use, you can make your character even more powerful and capable of taking on greater challenges.