Every real master (even at home) always has a convenient and multifunctional circular electric saw. But sometimes there are such types of work when you only need to saw off one part, or just perform small amounts of work, but you don't want to get out an electrical device. In this case, a hacksaw blade will help you out. But how to choose a good wood hacksaw, which will be easy to use and can easily "gnaw" any type of wood, we will consider further.
By right, it is the saw that can be called the mother of all hand tools.
Since the moment people understood the importance of iron and created the first saw, the tool has changed many times and already has a dozen "sisters" that can do any kind of work.
Hand saws are divided according to different parameters:
Let's take a closer look at what each of these parameters should be.
The main part of the tool is the blade. The first thing you should pay attention to when choosing a hacksaw for wood is the length of the blade.
A lot will depend on this, at least even the possibilities in application.
At the same time, the larger the canvas, the stronger it will spring, which will complicate process, especially when working with maple, ash and oak.
If you plan on sawing blocks, skirting boards or narrow slats, a tool with a length of 25 to 30 cm is enough for you.When planning to use a tool for serious work in construction, give preference to tools with a blade length of 50 cm .
When choosing the length, you should be guided by the rule that the length should be exactly 2 times the diameter of the workpiece.
If you do not follow this recommendation, you will complicate your work. The teeth of a short hacksaw will only bite into the wood, and it will be very difficult to move such a saw to free it from sawdust.
Working in an uncomfortable environment will cause fatigue sooner than if you followed all directions.
Usually the width of a hacksaw blade is 10 to 20 cm. Models with a width of less have many drawbacks, since they are impractical and will fail immediately.
But keep in mind that too wide tools will not give you comfort.
For the manufacture of hacksaws, alloy steel is used, which differs from the usual high content of carbon and silicon of the following grades:
The metal is tempered with a special effect of a magnetic field, due to which a high-frequency electric current appears.
When spreading on the surface, it heats up the top layer of the metal, after which it is quenched with cold water.According to the standard, the hardness of the metal should be 45 HRC, but it is better to give preference to products, the hardness of the fabric of which will be from 55 to 60.
A high density wood saw will have good flexibility, but the teeth will be stable. Externally, when examining the quality of the tool, you can determine the dark shade of the sharpened teeth.
Another important factor in the performance of the tool and its work when cutting is the size of the teeth.
An indicator such as sawing accuracy is designated TPI, which means the number of teeth per inch (2.54 cm).
The relationship between this technical parameter is as follows:
When you determine the size of the teeth, focus on the type of material being processed.
When working with material such as chipboard. Where high cutting accuracy is required, you should take a tool with an indicator from 7 to 9, and for logs in the garden, where the cleanliness of the cut does not play an important role, an indicator from 3 to 6 is suitable.
If we compare a regular and a hardened tooth, the difference is that a regular tooth does not dull for a long time in domestic use. But the hardened-toothed hacksaw cannot be re-sharpened, so when the quality of the cut decreases, you have no choice but to simply throw it away.
The advantage of a regular tooth is that it can be sharpened.
This work is periodically carried out using a file marked with an accident ( for sharpening saws). To sharpen, run the file several times over each tooth.
There are three types of hacksaw depending on the type of teeth:
These saws are sharpened on both sides so they can cut both forward and backward.
In this case, the tool will combine edges in the form of triangles with slightly elongated rounded notches. This solution makes it possible, with a guiding movement, to make a cut with rounded teeth, and when returning, expand the channel with triangular ones, while bringing sawdust and shavings out.
Some types of instruments have teeth that resemble a trapezoid in shape.This decision has made a new generation of hacksaw blades, which is durable and much stronger.
But it should be borne in mind that sharpening such a blade is a difficult task, since it is difficult to give shape to a difficult figure of small teeth.
This greatly shortens the life of the tool, at the end of which you will have to change the blade or choose another good hacksaw for wood.
Now on the market new models of hacksaws, which are created for cutting not yet dried wood, have become increasingly common. Small chips easily pass between the cutting teeth, and do not hinder the work.
This is a small saw, which is a flat rectilinear blade and handle. With its help, you can perform a number of small jobs: cut out curved parts, make a through cut, etc.
It is made from a blade with double-sided teeth in the form of a triangle, sometimes with parallel sharpening. The disadvantage of the tool is that when pressed during operation, the blade can deviate from the specified direction.
A hand saw with standard parameters can have any type of teeth and most often it is completed with several changing blades, which have different designs and types of teeth. Despite the versatility declared by the parameters, such saws are not suitable for making furniture.
Both narrow and standard saws tend to bend when the stiffness threshold is raised.
To avoid this, it will be effective to use a tool with a back, which will act as a stiffener. The presence of such a "retainer" will not make it possible to make a cut larger than the width of the canvas, since it will prevent the passage of the canvas into the tree to a great depth.
This type of saw is a more bulky device that is a manual version of the jigsaw. Due to the fact that the structure is solid and its threaded connection of the handles, such saws can easily overcome knots, making a cut along patterns and radii.
Depending on the intended type of work and the design of the saw, there may be:
Only a bow-type hacksaw can perform all these functions without additional tools.
The procedure for choosing is quite simple:
For carpentry work, choose a tool with fine teeth, which will give a high cutting accuracy, and for carpentry work - blades with large teeth.
But the overpayment fully justifies itself and is a figurative guarantee of a high level of wear resistance, as well as durability. But if you plan to work with a hacksaw occasionally, there is no point in spending such an amount.
Now about the handles. They are usually made of plastic. The prefabricated handles are made of two plastic halves that are not very rigid.
It is much more convenient to work with tools with a one-piece handle equipped with a rubber pad for fingers. If you have a rubber insert, it will be much more convenient for you to make a grip, thereby protecting yourself from the formation of corns.
Still on sale you can often find a tool with a cross over and a standard handle. The first option is convenient because it is possible to replace the canvas with a new one in case of expiration of the service life.
Keep in mind that not all saw models go on sale sharpened, and how soon you can start working depends on this seemingly insignificant detail.
There are many firms on the market that have established themselves and make good hacksaws for wood.
According to customer reviews, trust has won:
( 5 marks, average 2.6 out of 5 )
Posted By: Work Style |12, Nov 2020
Posted By: Work Style |10, Nov 2020
Posted By: Work Style |01, Nov 2020
Posted By: Work Style |03, Nov 2020
Posted By: Work Style |11, Nov 2020