Saw set

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A saw set is a device used in the sharpening of hand saws. Once the teeth have been jointed and filed, the saw set is used to adjust the set of each tooth.

The set is the amount by which the tooth protrudes from the side of the blade. Most saws have some amount of set, which creates a kerf that is wider than the blade and thereby prevents binding as the non-cutting part of the saw blade enters the cut. This makes it easier to make the cut and allows more control over direction. The amount of set is a compromise between the size of the kerf and the ease of cutting. Normally, alternate teeth are set in opposite directions so that an equal number of teeth protrude from each side of the blade.

The common form of a saw set is a device which resembles a pair of pliers. In use, the head of the saw set is located on the blade adjacent to the tooth to which set is to be applied. The handles of the saw set are squeezed together and this causes a dual action mechanism to first lock the saw set around the blade and then a steel plunger forces the tooth in the desired direction. Most saw sets have an adjustment screw which allows the amount of set to be determined by the location of a steel plate on the opposite side of the device to the steel plunger. The plunger pushes the tooth against this plate.

In the past, many tradesmen and craftsmen would sharpen their own saws and a saw set would be a common tool to find in the toolbox. In more recent times, modern hand saws are considered disposable and are rarely if ever sharpened.