Head — Ax

: For efficiency, the cutting edge (bit) angle should be tailored to the wood type: 20° to 25° for dry wood and 15° to 20° for green wood.

If you meant you need a guide on how to build an axe out of paper : Paper Axe Tutorial ax head

If you need a comprehensive guide on the evolution, anatomy, and maintenance of an axe head, these professional publications are highly regarded: : For efficiency, the cutting edge (bit) angle

: Modern axe heads are typically forged from high-carbon steel or impact tool steels like 5160, which prioritize toughness and shock resistance over extreme hardness. It covers the history, patterns (types), and the

: Published by the USDA Forest Service , this is often considered the definitive "solid paper" on axes. It covers the history, patterns (types), and the essential skills of hanging and sharpening an axe head.