If you have the Arrow Crafting Skill, Kore can automatically craft arrows for you. If the option autoMakeArrows in config.txt is enabled, you can list items in the file arrowcraft.txt to make Kore automatically create arrows using the specified items.
The format of this file is simply a set of lines that observes the following syntax:
<item name> <use flag>
In the following example,
Red Blood 1
this will allow Kore to create Fire Arrows and Iron Arrows from Red Blood and Garlet, respectively.