Types of steel
Modern hand and power hacksaws are made from several types of materials. The choice depends on the purpose for which the tool will be used.
Consider the main materials that are used to make the canvas.
Carbon steel
This material is known to be the most brittle. This, of course, does not give him popularity.
However, the quality of such a hacksaw depends not only on the characteristics of the material, but also on the processing method. If no rules were violated during production, then even such a saw will turn out to be durable.
Alloy steel
This version of canvases is only popular in our country. Foreign manufacturers practically do not pay attention to it. Nevertheless, such steel is an order of magnitude better than the one described above, at least because it is more technologically advanced.
High speed steel
Although this type of material is recognized as the best, it has several disadvantages. For a start, all the same about the pros. HSS blades are very sharp, and their teeth are much stronger than all other hacksaws. But at the same time, the material still remains fragile. Another drawback is that the price is too high.
Bimetallic blades
Recently, bimetallic blades are actively replacing all their "competitors". This is a relatively new invention. At the heart of the canvas is strong, but elastic steel. Usually carbonaceous is used. The cold-rolled strip is processed by electron beam welding, after which the teeth are cut into it.
This type of welding is used because it is with its help that the metal can be heated instantly. The teeth do not become more fragile, which is also very good. The cost of canvases made of such a new material is the same as in the previous case, so they are likely to soon oust their competitors.
How to choose a hacksaw for metal
There are a number of parameters to consider when choosing the best tool for home use. This will ensure long-term and convenient operation. Among them:
- the shape of the teeth and their pitch. The last indicator determines the thickness and hardness of the material being cut. When cutting, at least 3 teeth must be involved at the same time;
- the length of the blade, which also depends on the characteristics of the material being processed;
- a pen. It must be comfortable and not hollow, otherwise there is a high probability of tool breakage;
- price. This indicator depends on the quality of the blade, teeth, materials of manufacture and brand.
When choosing the right tool, the most important part will be the blade and its teeth.
When buying a hacksaw for metal, to ensure its long and flawless service, you should not forget to change the blades in a timely manner and follow simple rules of work. Once again, you can find out the details about this well-known tool from the video presented.
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What are they?
There are two types of hacksaw blades. Some are used for manual cutting, others for machine cutting.
For manual
These canvases can be divided into 2 main subtypes by size.
- Double canvases. Their total length of the canvas should be no more than 31 centimeters and 15 millimeters. In this case, the thickness should not exceed 0.80 millimeters.
- Single canvases.The length should be in the range from 26.5 to 31.5 centimeters, and its thickness should be 0.63 millimeters.
For example, diamond-coated blades are very common, which can even be used for working on ceramics.
There are also canvases that are coated with tungsten or tungsten carbide spraying. At first glance, such a hacksaw seems to be very sturdy, but you need to be very careful when working with it. This type of blade is extremely sensitive to voltage changes. Therefore, they are not advised to cut metal. Such hacksaws are not at all suitable for cutting rails, but they are a good option for longitudinal cutting of wood.
If you need a saw for working on tiles, then you should buy a frame hacksaw all with the same tungsten coating.
Handy pocket strings are a handy option for hiking. They are used by tourists, survivalists or military personnel. Working with such a saw is always long and painstaking. After all, the canvas here is very thin, which means that you can neither make sudden movements, nor press hard on the hacksaw. You need to move carefully from bottom to top. First, small branches are sawn off, and then the log is sawn. But if such a saw is dull, then you can not throw it away, but turn it into a homemade trap for animals, which will be useful to any hunter.
For mechanical cutting
In order to automate the process, craftsmen use a hacksaw cut-off machine. This tool is designed for cutting channels, pipes and other metal products. Accordingly, the blade for such a tool should be slightly thicker and much stronger.
Manufacturing
A homemade hacksaw made of metal can be made by anyone without practical skills.
It is important to study in advance the device of a hand tool, how to connect the main parts
A handle with an arc can be made from large diameter wire, reinforcement, metal strips, profiled or plastic pipe. It remains to think over the fastening of the canvas.
A hacksaw is a hand tool for sawing workpieces from different materials. To create high-quality cuts, you need to learn how to choose canvases. We must not forget about the rules for choosing a frame with a handle.
It is important that the tool is comfortable to work with, the blades are securely held in the clamps
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Operating principles
To cut metal with a hacksaw more efficiently, when working with a hand tool, you must adhere to some rules:
You need to hold the tool with two hands so that the blade does not bend
It is better to fix the workpieces in a vice.
The usability of the tool can be increased by changing the cutting angle.
The pressure when moving forward must be increased, when moving backward, it must be reduced.
It is important to practice in advance in securing the canvas in the clamps. It is important that it does not move when cutting.
Before starting to work with a hacksaw, you need to check the sharpening and integrity of the teeth, their location relative to each other. If there are irregularities, the teeth diverge in different directions, you need to replace the blade.
Cutting a metal pipe (Photo: Instagram / ekb_tools)
Choosing a hacksaw for metal
Buying any tool is not a problem if you know how to choose. When choosing a tool, try not to fall for marketing gimmicks from sellers and choose wisely.
Find a middle ground among prices, because budget models are often of poor quality, and the potential of too expensive options may not be fully used.
Also, do not rush to open a wallet if you cannot understand whether the price justifies the quality of the instrument.
But which hacksaw is better for metal? Of course, the hacksaw that will show itself in practice better than the rest, the one that can perform tasks of varying complexity and maintain ease of use.
When choosing, pay attention to the frame and the material from which it is made. A hacksaw with a heavy-duty frame can serve well and for a long time, but there is also an ordinary one that loses in all of the above
Check out the grip, which will make your job depend on its convenience.
Avoid handles with many plastic parts, which increase the likelihood of breakage when working with great force
It is also worth paying attention to the method of stretching the canvas, here the best option would be a lever mechanism, which differs from the rest in convenience
Areas of application and types of hacksaws for metal with a photo
The main purpose of this hand-held locksmith tool is sawing metal parts, but due to the design features, namely the presence of small teeth on the blade, using a hacksaw it is possible to work with the following materials:
- plastic;
- polyvinyl chloride;
- wood chip saw;
- Styrofoam;
- ceramics;
- laminate;
- wood;
- plexiglass.
The simplest hacksaw for home use is a C-frame, wooden handle and blade, not of the highest quality
It is due to the design features when working with a tool that it is possible to achieve almost perfectly smooth edges of the workpieces without crumbling the edges.
Professional models are distinguished by a reliable frame, comfortable rubberized handle and more functionality
Almost everyone knows what a hacksaw looks like for metal, but not everyone knows what varieties exist for the purposes of using this tool:
- home models, which are among the most affordable options, suitable for simple tasks at home. Most often, this type has additional tension screws, a simple wooden handle located in the longitudinal plane relative to the canvas;
- professional models with a more perfect design. For the convenience of work, they are equipped with rubberized handles, and also have an adjustable blade setting angle, which allows for non-standard work;
- hacksaw handles. On the one hand, this is the most primitive type of metal tool, which is a bracket into which the blade is installed. But on the other hand, such a mini-hacksaw for metal allows you to work in hard-to-reach places and makes it possible to use even broken blades.
Mini hacksaw handle allows you to get to places where simple will be useless