What is required to sharpen the blade of an axe?

To sharpen the blade of an axe effectively, filing the edge by hand is the preferred method. This approach allows for precise control over the sharpening process, enabling the axe head to achieve the correct angle and sharpness needed for optimal performance. Hand filing maintains the integrity of the blade's edge, ensuring that it is both sharp and durable for cutting tasks.

Other methods, such as using an electric sharpener, may remove too much material or create uneven edges that can impair the axe's effectiveness. Replacing the axe head is unnecessary if the existing blade can simply be sharpened. While sandpaper can be used to smooth out edges, it doesn't provide the same level of accuracy and effectiveness in sharpening as a hand file does. Thus, hand filing is the most reliable technique for maintaining the sharpness and functionality of an axe.