Comparison Husqvarna 5101921-02 vs Fiskars 123880

The total length of the hacksaw blade.

The value of this parameter is directly related to the saw type (see above). The general rule for choosing is as follows: the blade should be twice as long as the thickness of the largest workpiece that is planned to be sawn. This will provide an optimal range of motion to avoid unnecessary fatigue, and the tool, on the other hand, will not be too bulky. However, a long blade tends to spring back, so when working with hardwoods or other difficult-to-cut materials, shorter saws can also be taken. And in models with interchangeable blades (beam and jigsaw, some mini-saws), length data will be required to search for spare blades.

In general, for simple household tasks for sawing wood, a length of 280 – 300 mm is considered optimal. For a private house with a garden, simple construction work, you should pay attention to larger models — up to half a metre. And the largest two-handed saws can have a length of 1000 mm and even more. More detailed recommendations on the optimal blade length for certain tasks can be found in special sources.

The presence of hardened teeth in the saw blade (in models with removable blades — at least one of the complete blades).

Hardened teeth usually have a characteristic dark coating that stands out from the base material of the blade. They have increased hardness and strength, which significantly increases the life of the hacksaw before blunting. On the other hand, it is impossible to re-sharpen a tool with such teeth — you will have to change either the entire hacksaw, or at least the blade.

The type of sharpening used in saw teeth. In fact, this parameter determines the shape of the tooth.

— Standard. The teeth of standard sharpening are usually made in a triangular shape; the only exception is saws for foam concrete, in which “standard” teeth can have rather specific outlines. Standard sharpening is quite functional and suitable for almost any application; in addition, if the teeth are not hardened (see above) and are large enough, they can be sharpened if necessary.

— Triangular. Externally, trihedral teeth can be almost indistinguishable from standard ones; however, if you look closely, you can see an additional edge — as if someone cut the tip of a triangular tooth obliquely and sharpened the resulting surface. Also, this sharpening is called 3D. It is considered to be more efficient and advanced than the standard one: in particular, the saw moves more easily in reverse and the teeth wear less on this move, which reduces fatigue and increases the life of the blade. On the other hand, trihedral blades are expensive, and it is impossible to sharpen dull teeth on your own — you need to change the saw (at best, the blade itself).