Saws have been in use for thousands of years, evolving and expanding their variety to fill specific niches over time and advances in technology and materials. Today's "complete" collection of tools will include a variety of saws, from simple copy saws to complex combination machines and specialized table saws incorporating the capabilities of several hand saws.
We'll cover some specialized tools that have little use outside of the professions for which they were designed. Additionally, you may be surprised to find that many saws have different names in different countries.
In most cases, the shape of the saw and the number and shape of the teeth determine how the saw will be used.
Here are 26 different types of saws , their uses and pictures:
Canvas size
Depending on your task, you can choose different blade lengths. For simple boards and small bars, a length from twenty-eight to thirty centimeters is quite suitable. If construction work is underway, then it would be wiser to take a canvas from forty-five to fifty centimeters long.
The basic rule: the length of the product should be half the length of the hacksaw itself, otherwise you can forget about ease of use.
Sharpening and tooth size
The size and sharpness of the teeth is one of the main criteria when choosing a hacksaw. The bottom line is that the small teeth on a hacksaw are for fine work and the long teeth are for rougher work, they are well suited for gardening where neatness is not an issue.
By looking at the photo of wood hacksaws with various teeth, you will see which hacksaw is right for you.
In the hacksaw market, there is a TPI unit, on which the cutting accuracy directly depends; it determines the number of teeth per 1 inch. For example, you need to cut a couple of chipboard boards, in this case it is recommended to use hacksaws with a TPI in the range of seven to nine, then the cut will be smooth and neat.
If you need to work in the garden, cutting down branches, for example, then accuracy is not so important; a hacksaw with a TPI of three to six will suffice. The tooth pitch can be from two and a half to six and a half millimeters and from one and a half to five millimeters.
The shape of the teeth of a classic saw is triangular and can be easily sharpened. However, in modern realities you can more often find hacksaws with trapezoidal teeth. It positions itself as a stronger and more durable saw.
But proper sharpening with such a tool will be impossible, because the steel from which the hacksaw is made does not lend itself to a simple file, and it will be almost impossible to repeat this shape. As soon as the saw becomes dull, we either change the blade or go and buy a new one.
Sharpening a hacksaw on wood with your own hands is not a difficult task, but it is not easy either. Before starting sharpening, it is necessary to carry out routing so that the blade does not jam during sharpening. To do this, we use a special tool called sharpening.
Sharpening itself requires completely different tools.
TOP best models
The TOP 5 modern hand saws for wood are represented by the following models:
- Bahco 2600-16-XT11-HP. The saw copes equally effectively with transverse and longitudinal cuts. The canvas has a special coating against friction forces. Equipped with resistant teeth and an ergonomic non-slip handle. Weighs less than 0.5 kg. The only negative is the high price.
Hand saw for wood Bahco line Source insales.ru
Instructions for properly sharpening a hacksaw
Before starting work, you need to firmly clamp your blade in a vice so that it does not wobble. Having secured the blade, take a file and begin sharpening the left edge on the first tooth. When doing this, you need to hold the file at a sixty-degree angle.
Use a file using even and smooth movements. In exactly the same way, you should sharpen all the left parts of the odd teeth, and then the right ones. Then we turn the blade over, fasten and sharpen the teeth of the even row.
Having finished the work, be sure to clean the blade from burrs with a specialized velvet file.
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Human interaction
There are many myths about giant sawfish attacking ships. Using their noses, they caused holes and ships sank, and the giants cut people in half. However, there is no confirmation of the events described.
The sawfish treats humans quite calmly, without showing aggression towards them. But cases of injury and even death to humans by saw-nosed stingrays are known. Often sawfish are caught in nets and can show strong resistance when caught. It is a large fish and has great strength, capable of causing great damage.
Contrary to existing myths, sawnose fish do not feed on large animals.
A sawfish, repelling a human attack, is also capable of causing serious injuries to a person by swinging its saw in different directions.
The right approach to choosing a hacksaw
Works in which hacksaws are used are divided into carpentry and joinery. In carpentry, accuracy is more important, while in carpentry, speed is more important.
First of all, you should pay attention to the quality of the metal of the blade; to do this, we take the hacksaw in our hands and bend it 30-45 degrees. This must be done as carefully as possible, since low-quality metal is very easy to break.
After carrying out this operation, let's look at the bend; if a slight deviation appears there, then the metal of this product is of very low quality.
The most important criterion when choosing your hacksaw is the price. Naturally, the choice before you is a cheap Chinese hacksaw of poor quality or an expensive saw from a well-known brand. However, having overpaid once, you will no longer have to constantly change the blade or buy a new tool. Major brands pay close attention to the quality of steel and hardening used in their blades.
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The main tasks of the teeth are to remove sawdust and, directly, to cut the wood itself.
Teeth with a TPI setting of up to seven are fast and easy to use. Therefore, the choice of a hacksaw should depend entirely on your own needs.
Jigsaw
Circular saws and chain saws cannot replace a device that uses a narrow cutting blade that moves up and down at high frequency.
Thanks to this arrangement of the working body, the jigsaw allows you to quickly and accurately cut curved flat parts. Plywood, ceramics and plastic, OSB and soft metal - all of this can be cut with a good jigsaw with a quality file.
Jigsaw
For each material, manufacturers make special saws that differ both in the inclination of the teeth and in their frequency.
For example, a saw with a large tooth cuts wood better. A blade with a fine toothed notch can handle sheet metal with confidence. We will not give any special recommendations on choosing saws for a jigsaw, since the manufacturer indicates the recommended type of material on each of them.
The main technical parameters of a jigsaw are engine power, saw speed and maximum cutting depth (indicated for different materials).
For household models, these parameters are within the following limits:
- Power from 400 to 900 W;
- Speed (with the possibility of smooth adjustment from 0 to 3000 rpm);
- Cutting depth (wood - 45-80 mm, steel from 4 to 20 mm).
A useful jigsaw option is a laser pointer. It helps to clearly see the direction of the cut when the marking line is hidden under a layer of sawdust. When choosing an electric jigsaw, pay special attention to the attachment in which the file is attached. It should provide the most reliable clamping possible. Otherwise, the file will regularly jump out of its weak “embrace.”
Narrow hacksaw
A small narrow hand saw, consisting of a straight thin blade and a handle. It mainly serves for various thin. Most often, it has a blade with triangular double-sided teeth.
One of the main disadvantages of this type of hacksaw is the possibility of deflection during your work with a wooden product.
Briefly about the main thing
A hand saw allows you to efficiently, quickly and safely saw wood, as well as materials based on it and analogues with similar characteristics. When choosing a tool, the following parameters are taken into account:
- Purpose.
- Size, pitch, type of teeth.
- Type of fabric material.
- Length and shape of the canvas.
- Type of handle.
There are the following types of saws for wood: classic, narrow, with a back, bow, award, folding. The TOP 5 best models included: Bahco 2600-16-XT11-HP, Gross Piranha 24109, BISON EXPERT, Stanley Jetcut 2-15-283 and BAHCO LAPLANDER 396-LAP.
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Bow saws
This is a heavy-duty hacksaw. The main advantage of working with this type is the ability to work with the product you need from absolutely any angle. Using a bow saw, you can process the material from any side, lengthwise and crosswise, and make complex workpieces alone.
A small hacksaw is perfect for small jobs in the garden; it is not recommended to use it when sawing large materials.
Habitats
The main habitat of sawfish rays is the warm temperate and tropical waters of the Atlantic, Indian, and Pacific oceans. They can be found in the coastal waters of Australia and America. Preference is given to sea and brackish water. Some species of stingrays have the ability to adapt to the salinity level of the water. Smalltooth sawfish are good in fresh water. In Nicaragua, sawfish can even be found in lakes.
The stingray prefers shallow water with muddy water, enters lagoons, mangroves, and settles in estuaries. During seasonal migrations (when water salinity increases) it enters rivers. The Australian stingray lives in rivers permanently. The young live mainly in the coastal zone; large individuals can swim to a depth of 40 meters.
Saw-saw rays are nocturnal, live and hunt at the bottom, and rarely rise to the surface. Stingrays often live at such shallow depths that their fins, when lying on the bottom, stick out of the water. Stingrays prefer to settle on a soft bottom (sand, silt), but some individuals also feel good on a rocky bottom.
