Knife-grinders were individuals who sharpened the blades of weapons for money. Mostly, they were young, uneducated and poor Undertowners, which was why Rook Barkwater was wearing a knife-grinder's clothes and tools during his clandestine voyage to the Free Glades with Magda Burlix and Stob Lummus.
Notable Knife-Grinders[]
- Vilnix Pompolnius
- Millcrop
- Rook (but only as a disguise)