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The Nicholson knife needle file with handle has a wedge shape and double-cut Swiss pattern teeth for precision filing of slots in fine work. The file is wedged and tapers toward the point to ease access into slots. It has double-cut Swiss pattern teeth on both sides for rapid removal of material on delicate or intricate parts, single-cut teeth on the sharp edge for finishing, sharpening, and deburring, and no teeth on the flat edge to protect adjacent surfaces. A knurled round handle provides for secure gripping.
Hand files are used to remove material and smooth and shape workpieces. They have forward-facing cutting teeth and cut when pushed over either a stationary or rotating workpiece. Single-cut teeth have single rows cut diagonally across the width of the file. Double-cut teeth have two sets of rows cut in opposite directions. American pattern files have three coarseness grades. Coarse, also known as bastard cut, is suitable for efficient, heavy material removal where finish is not a concern. Medium, also known as second cut, offers average material removal and finish quality. Fine, also known as smooth cut, provides the smoothest finish. Swiss pattern files have eight coarseness grades, from 00 (coarse), 0 (medium), and 1 to 6 (fine to finest), offering a smoother, more precise finish than equivalent American pattern files.
Nicholson manufactures hand tools and power tool accessories. The company is headquartered in Sparks, MD.
Hank Schwartz
Reviewed in the United States on November 25, 2012
I've bought a quantity of this file to use for slotting banjo nuts and bridges.It's ideal for this purpose, being sharp and relatively fine in the width of the knife edge.Perfect for gut or nylon strings, and acceptable for steel string slots.
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