Nicholson 8-inch Mill Bastard File
CERTIFIED tier
Nicholson has been manufacturing files since 1864, and the 8-inch mill bastard remains one of the most universally useful hand tools in any shop.
Origin
Made in USA
Warranty
Manufacturer warranty against defects in materials and workmanship; files are consumable tools with expected replacement cycle based on use intensity
Price
~$10 (Budget)
Community
Reddit r/BuyItForLife Approved
The high-carbon steel teeth are machine-cut, providing consistent material removal rates across the entire working surface. A mill file handles deburring, fitting, sharpening lawn mower blades, truing edges on hand tools, and a hundred other tasks that would otherwise require powered equipment.
The file is a consumable by nature — teeth eventually dull — but a properly used Nicholson file lasts years in a home shop and months in daily professional use. The key is technique: use chalk to prevent pinning, cut on the push stroke only, and store files separated to prevent tooth damage.
At $8 to $12, the cost-per-year is effectively negligible, and the tool itself requires no power, no batteries, no maintenance beyond a wire brush cleaning. Nicholson files are available at virtually every hardware store in North America, which means replacement is never a logistics problem.
The file handle is sold separately, and a good hardwood handle with a ferrule will outlast dozens of file blades. This is toolmaking reduced to its most honest form — hardened steel, shaped teeth, and human skill.