Carpenter's bow saw. Bow saw - together with it we can handle a log and saw any board! Bow saw blade

I found this gadget on one of the sites,
and folded _

TTX: Folding saw with handles.
Canvas length: 32 cm
Working size: 40×19 cm
Folded size: 41×2.5 cm

but according to Murphy's laws, everything good has already been sold out)!!

I decided to study the topic in more detail and as a result summarized the following:

According to reviews from experienced people, few other saws can compete with bow saws in speed and energy savings. The design allows you to saw with one hand, and therefore the second is released to hold the log or to insure that the tree being cut falls on you (within reason, of course)) Next is a quote from forum http://guns.allzip.org/topic/21/321929.html, author kazimirov 05-02-2010 13:26 "

“Modern bow saws cut faster and easier than all other saws.

The bow weapon is more practical than the two-handed one. For a two-handed saw, two workers with great skill are needed, only then does it cut brilliantly, truly better than anyone else. For everyone else, it will be eight, pinched and take away strength and time. Luchkova will cut ANY KETTLE quickly and easily.
If you need to cut very thick logs, a hacksaw will be more practical than a two-handed one. Here in another thread the author praises the 60cm Kremlin saw. I haven't tried it. But I'll try.

A homemade bow made from a bent barrel is much worse than a metal one. It will not give the required tension - it will be more difficult to saw. And heavy to work and carry. Donate your strength to carry a few hundred grams of the saw and it will thank you a hundredfold.

Durability. If used correctly, the canvases last a long time. More expensive ones last longer. They're fired up. Swedish, for example.
You can't cut oak- lands the saw very quickly. Also the saw becomes dull, if the wood is contaminated with soil, especially sand.
Avoid pinching the fabric in cutting - the gap decreases, sawing becomes harder, and independent cutting during a hike is uneven, a protruding tooth quickly becomes dull and slows down the saw."

Two types of blades are used for bow saws:

1. For sawing raw wood with a chipping tooth (in common parlance, the Kremlin tooth - resembles the teeth of the Kremlin wall))

2.For sawing dry, seasoned wood and for transverse sawing raw wood

The blades can be simple or with hardened teeth. A blade with hardened teeth is of better quality, cuts better, but is extremely difficult to sharpen and set, and is much more expensive. Conventional blades are correspondingly cheaper, require a little more energy when cutting, but are easier to sharpen and cut. If you have a multi-tool with a file, the cutting and sharpening of the blade can be done practically while sitting on a stump - if you naturally have the desire and steady hands). Again, according to reviews, if treated with care, ordinary canvases last quite a long time.

The depth of the cut is limited by the distance from the blade to the spacer bar.

There are, of course, options for homemade bow saws

But here we return to the opinion of an experienced user - " A homemade bow made from a bent barrel is much worse than a metal one"!

CONCLUSION - I WANT IT!! Dear SKLAD, may you consider this device as an addition to your product range?

If you set out to find a bow saw, then searching on the Internet will not lead you anywhere beyond garden saws. And for a thin sheet of 4-5 mm, you can immediately go to Ebay or Amazon, because in Russia there is definitely no such thing. Lucek from bent pipe this is not at all what I needed.

I planed the width of a template that I made from cardboard.

Before cutting out the saw posts, I drilled holes for the handles and used a chisel to make a recess for the tenon of the spacer bar. All irregularities after the jigsaw were removed with a plow.

Then with a hand plane made a narrowing upper parts racks, having previously marked the center for reference.

At the bottom I worked with a rasp and a file in the area of the holes for the handles, and then used a plane to make a narrowing towards the bottom. It turned out like this.

Most of all I had to tinker with the handles. Since I don’t have a lathe, I got out of the situation using a jigsaw. I applied a profile to 4 sides of the block, and then sawed it off on all sides to the marking line. Use a chisel to knock down the resulting comb. I straightened the corners with a rasp. I drilled holes for the bolts before this procedure.

Covered the saw water stain“old oak” and teak oil. My bowstring is made from postal twine.

As shovok I used a furniture bolt with a diameter of 7 mm, in which I made cuts for attaching the canvas with a pin. I drilled a hole in the canvas and used stainless steel wire with a diameter of 1 mm as a pin.

I rounded the ends of the spacer (middle) by first sawing out a tenon, and made a recess at the joint at the post with a rasp. It turned out to be a kind of joint.

The canvas was used from the usual one band saw 6 mm wide. There are several cuttings with different tooth frequencies 4 and 6 tpi I will try. The first tests with a blade at 6 tpi showed that the blade requires regrinding because the tooth angle is too aggressive and sawing is not easy, but quite possible. At small radii the saw cuts perfectly. The cut cannot be called clean, but that may seem to some.

Almost everyone home handyman There is a power saw in the work suitcase. But sometimes it is necessary to saw off a part or do some woodworking, for which there is no desire to unwrap the device from the suitcase. And in this case, it would be nice to get a hacksaw for wood. Its manual version will be an excellent assistant if necessary. Let's take a closer look at the question of how to choose a hacksaw for wood!

Characteristics of a hand saw for wood

There are many differences in this tool, such as blade sizes, steel grades, tooth shapes, as well as the design of the handle itself. Let's look at each of them in more detail.

What should a hacksaw blade be like for wood?

This element is the main parameter of the hacksaw. And the main thing about it is its length. Depending on it, the tool can be used for different purposes. There is one caveat, which is that the longer the blade, the more springy the tool. This complicates the process of wood carving, especially if you need to work with maple, oak, or ash.

A length of 25-30 cm is quite suitable if you need to cut small elements of beams, slats, and baseboards. If it is necessary to carry out more serious types of work, then a hacksaw should be chosen with a blade of 45-50 cm.

The basic rule when choosing the length of the blade is that it should be twice as long as the elements being processed, otherwise it will be more difficult to work. Standard sizes The width of the canvases is up to twenty centimeters. Too narrow models will quickly fail, while wide ones are completely inconvenient to work with.

Hacksaws are made from alloy tool steel, which contains a lot of carbon and silicon. Standard option The hardness of the material is 45 HRC, but for work it is still worth choosing a hardness with an indicator of 55-60 HRC.

Characteristics of hacksaw teeth

It is the size of the teeth that is the most important indicator. Their number per 1 inch shows the TPI, which determines the accuracy of the sawing process. In addition, these parameters are interrelated:

· If the blade has large teeth, then the speed is quite high, but the cut is sloppy.

· If the teeth are small, the speed of work is also low, but the cut is precise and very neat.

When faced with the question of which hacksaw to choose, focus on a TPI of 3-6 for garden work, or 7-9 for chipboard work.

The teeth of a hacksaw can be ordinary or hardened. If the tool is used in living conditions, hardened teeth will not become dull for a very long time. But when it becomes dull, it can no longer be sharpened, and the tool will have to be thrown away.

Regular teeth can be sharpened using a file marked with an accident mark.

There are 3 types of hacksaws, depending on what teeth are used:

To cut longitudinally

· Sawing in a transverse manner

Mixed sawing

If you use modern hacksaw, in which the teeth are trapezoidal, the blade can be created durable and wear-resistant. But it is very difficult to sharpen, which means the service life of such a product is much shorter.

How to choose a hacksaw? Types and purposes

Narrow saw version

Saw small sizes, narrow shape, very effective when cutting raw wood. Wet chips come out very easily through the gaps of the teeth, so the movement of the saw is not hampered.

During the production of saws narrow shapes, their blades have triangular double-sided teeth. The only disadvantage of this tool is its ability to deviate from the desired direction.

It can have absolutely any teeth, as well as be equipped with replaceable blades.

Regardless, these types of saws are best used in the furniture manufacturing process.

Saws that are equipped with an axle can be said to have stiffening ribs. But when using hacksaws and increasing the rigidity of the materials being processed, they can bend. This is why drying is so important. Its main task is to prevent the cutting blade from passing deep into the wood, for which it controls the depth of the cut with the saw so that it is not wider than the blade itself.

Such devices are already more cumbersome. To some extent they resemble a jigsaw.

To begin with, you should decide on the purpose of using the tool, as well as the frequency of its use. Decide how uniform the blade should be, and of course, what price you are willing to “accept” and buy a handsaw.

The handles are ordinary, plastic. And the presence of a rubberized insert will protect the master’s hands from the formation of calluses during the process of wood carving. manual option hacksaws.

K category: Carpentry work

Bow saw

Purpose and structure of the saw. The bow saw is so called because it looks like a bow (it also has a bowstring!) - an ancient weapon for throwing arrows. This saw is designed for longitudinal and cross cutting of wood.

There are bow saws various designs. But the saw shown in Fig. is most often used. 24.6. A steel toothed blade is stretched in the saw machine, and the upper part of the machine is tightened with a bowstring.

The machine consists of two racks, two handles, a center and a twist (otherwise known as arrows). The stands are made from hardwood. There are holes for handles at the bottom of the racks. The handles themselves are round in shape (to make it easier to hold) and are also made of hardwood. Each handle has a cut into which the end of the toothed blade fits. And to secure the canvas, small holes are drilled in it and the handles. Special pins or nails are inserted into the holes, connecting the handles to the blade and, ultimately, to the saw machine.

The thin blade of the bow saw is made of durable, so-called tool steel; it can be easily tensioned in the machine. A thin blade makes sawing wood faster and easier.

There are holes in the middle on the sides into which the racks are inserted (exactly in the middle of their height). The middle connects the racks to each other and expands them, allowing you to adjust the tension of the canvas. The twist rests on the centerpiece.

Rice. 1. Saws: a - hacksaw; b-bow saw

A bowstring, made of thin, strong linen or hemp rope, tightens the posts. When the twist (arrow) rotates, the bowstring twists and tightens the upper ends of the posts. At the same time, the lower ends of the racks diverge, tensioning the saw blade.

Preparing the saw for work.
Before you start sawing wood, you need to check and adjust your bow saw. Here is the sequence of operations:
1. Loosen the string slightly by turning the twist counterclockwise.
2. Take the saw by the handles and lift it with outstretched arms so that the bowstring is pressed to the chest at shoulder level.
3. Close one eye (preferably the left one) and check whether the canvas is tensioned and installed correctly. First they look at the canvas at the right handle, and then at the left. By slightly turning the handles, you achieve such a position of the serrated blade so that only its back is visible, and not the sides. In this case, the canvas is installed without distortions.
4. Stretch the saw string, rotating the twist in the opposite direction.

Remember!
1. You can only work with a working saw.
2. When starting to saw, you must use a guide.
3. Do not hold your hand near the teeth of the saw blade while working.
4. Finish sawing carefully, never leave the saw in the cut!
5. Be careful when moving the saw from place to place. The saw is carried in the lowered hand, bowstring forward. The teeth of the blade should be pointing down.
6. Don't be distracted while working!

- Bow saw

The bow saw is one of the most common types of saws still in use today. The design of this tool includes several structural parts, one of which is the bow saw blade. Such a blade can have different sizes and tooth shapes, can be made from a variety of metals and have various purposes. Therefore, in this article we will look in detail at blades for bow saws for wood, and also find out what you need to know in order to choose such a blade in a store or hardware supermarket.

Main features of the saw blade

When choosing or purchasing a saw, it is important to pay attention to the main features of the part, namely parameters such as blade length, density and stability, fastening method, etc.

Length of blade for bow saw. Determining the length of the bow saw blade is very simple - to do this, it is enough to know the length of the frame in which it should be installed. So, the frame can have a wide variety of sizes - it can be a saw with a length of 350 mm, 500 or 700 mm, and so on. Also, important feature in this case, it is the length calculation system - it can be inch or metric. Therefore, if the length of the bow saw is expressed in inches, then inch blades should be selected accordingly.

Canvas material. Several types of steel are used as material for the manufacture of bow saw blades. Naturally, all these types are high-strength, so the following types are used:

- V high carbon steel;

- V high-strength tool steel;

- s hardened steel.

In addition, the coating of the blade teeth can be coated with a special Teflon coating to prevent corrosion processes or any others that arise due to external environmental influences.

Shape of blade teeth. Is enough important characteristic when selecting and using a bow saw blade. The blade teeth may have different shape– these can be trapezoidal or triangular-shaped teeth, they can also be teeth with a forked triangular tip (Kremlin-shaped teeth), and so on. In addition, a feature of bow saw blades for wood is that it has different quantities teeth per inch of blade. This indicator indicates how neat the cut made with this blade will be. The greater the number of teeth per inch of blade, the more accurate the cut will be; accordingly, the fewer teeth, the rougher the cut will be.

Consumer analysis of bow saw blades

Today, you can easily buy a blade for a bow saw, but at the same time, you need to know the most suitable options. Therefore, we will present several types of saw blades that are highly popular in the market.

Stanley Fleam Tooth canvas. This blade is intended for use in a bow saw and has hardened teeth of a traditional shape. The material used to manufacture this blade is Swedish high-strength steel. The surface of the teeth themselves is hardened, so when examining this blade, you will notice that they have a slightly dark shade in contrast to the rest of the surface of the blade. This blade is best suited for quick cuts, longitudinal and cross cuts.

Thanks to the successful geometry and tooth spacing, the occurrence of vibrations during operation is eliminated and minimized. The blade length of this blade is 610 mm. Thus, if the blade does not fit the size of the bow saw frame, you can install a special adapter that will adjust the size of the blade to the size of the saw itself.

Bahco bow saw blade. This model of blade for a bow saw has been around since 1969. So, the company developed its own version of the saw blade, which was made of bimetallic material. Thanks to the properties of this material, the fabric is very elastic, and at the same time durable and wear-resistant. In addition, the blade has high cutting ability. The length of the blade is 530 mm, and the cutting has 51 teeth. In turn, this allows in an ideal way work with old and dry bars, wood, etc. And thanks to the triangular shape of the teeth, the blade is also well suited for cross-cutting raw wood.

Intertool bow saw blade with an “American” tooth. The material used to make this blade is Swedish high-strength steel. The teeth of this blade have a hardened structure, which ensures a long service life of the tool, and thanks to the correct geometry of the teeth, any vibration is eliminated during operation, and a clean, high-quality cut is ensured.