Where can I obtain a Bowstring? Agent #2 August 13, 2018 10:09 Updated Follow Bowstring can be found in challenging locations, events, and, of course, the dungeon. Related articles What can I use the Grindstone for? How do shields work? What is Castle Level? How do I use a crossbow? How do I open the second quick slot? Comments 0 comments Article is closed for comments.