Bowstring Pattern is an item added by Tinkers' Construct.
Crafting[]
In order to craft Bowstring Patterns, a Blank Pattern must be placed in a Stencil Table and the pattern found by using the "Next Pattern" and "Previous Pattern" buttons until Bowstring Pattern is selected.
Uses[]
Bowstring Pattern is used in conjunction with a Part Builder to craft Bowstring. It is then used to craft Tinkers' Construct bows. Only String can be used with the Bowstring Pattern to craft the Bowstring.