Round Edge (Chenier) files are parallel in width and thickness with rounded edges and feature cutting only along the edges. They are ideal for filing in narrow, tight spaces, allowing material removal in depth without widening the slot. They are commonly used for crafting joints, hinges, and tubing.
These files are especially in guitar work when shaping/adjusting the budge and nut slots. Their narrow, edge-cut design allows luthiers to file precisely in tight spaces without widening the slots.