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From top: Single-cut file, half-round file.

The first tool on the list is a file. More specifically, a single-cut file, also known as a bastard-cut mill file. This tool can be used for fine-tuning a blade profile as well as to form bevels. A sharp file will make fast work of soft (annealed) steel, and the use of a file card or a wire brush will help to prevent the file from clogging up during use. A file may be slower at cutting steel than a belt grinder, but it has a much lower price tag—a quality file can be bought new for around $6.