The Crossbow Bow (sometimes called Prod)
Early medieval crossbow prods were generally made out of horn, wood or with sinew layers as a composite bow.
Due to their heavy draw weight, they where cocked with a belt hook, and they would create a 280 to 444 pounds draw at six to seven inches.
The steel prod appeared in 1330, and replaced all other horn, wood and sinew bows completely by 1600. Steel bows where also waterproof and required very low maintenance as apposed to the horn and wood bows.
The steel bow is flat and has squared edges. Both sides of the bow are slightly angled up from the center. In addition the bow is inserted to the stock at a slight angle (between 4 to 6 degrees). This 2 characteristics are super important for providing a much more crisp and powerful shot. It eliminates a lot of the friction and drag between the bow string and the top of the stock, which would also prevent the string from moving freely when the bow recoiled.
In order to procure a good bow with correct dimensions and shape, the spring steel bows where first craved out of wood. Then the wooden replica bow was sent to a steel spring blacksmith to copy. The steel was also tempered for little softness to prevent a break if overstrained.
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