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- Rectangular-shaped file with a single set of teeth used for general sharpening of metal objects.
- Common types include mill, flat and hand, depending on thickness and the taper.
- A flat double-cut file is commonly used to sharpen mower and axe blades where a mill bastard file is commonly used to sharpen shovel blades.
- A hand single-cut file is used for more precise smoothing and for deburring metal and plastic.