Saws for aerated concrete, wood, metal and drywall. their features and varieties
A hacksaw is a kind of hand saw. No person engaged in home improvement on their own, does not imagine their life without it. Such a carpentry and metalwork tool is a handle, connected with a working cutting blade that has sharp teeth.
Saws are divided into several types: for wood, metal, aerated concrete (aerated concrete) and drywall. This division is due to the fact that saws, which have different teeth, as well as the shape of the tool, are designed for different jobs. For example, a wood saw is capable of cutting not only wood but also aerated concrete and drywall. And a metal tool cuts metal, but can cut all other materials as well.
Buying a wood hacksaw should be approached carefully. They differ from each other in the shape of the saws, handles, variety of teeth.
The classical hacksaw is also known as a regular or wide saw. This saw cuts through wood, lengthwise or crosswise. The teeth of the saw are triangular in shape, the pitch between them is from 1.5 to 6.5 mm. The classic type quickly cuts through wood, the only disadvantage is that the carving itself is rough and a lot of chips remain, but for garden work it is perfect.
A narrow (circular) saw is a specialized saw. A hacksaw can have teeth on both sides for a cleaner cut. Such a tool is designed for carving, when it is necessary to accurately cut parts out of wood.
Spiked is designed for a neat cut, when the cut is obtained beautifully and the chips are not so much. The teeth of a hacksaw are in the shape of an isosceles triangle. The saw is only used for cross-cutting, the width of the tool is usually no more than 1-1,5 mm.
Types of wood hacksaws are also subdivided according to the shape of the teeth:
However, this tool is not suitable for cutting laminate. After 20 cuts it will be very difficult to work, because the teeth are already very blunt.
This is a type of saw that is designed for cutting metal structures. Such a tool can cut wood, aerated concrete, drywall, but is not able to cut stone and concrete.
Metal hacksaw is, of course, better to use as intended and cut only metal structures. Saw includes the following elements: a hacksaw blade, a frame for mounting and a handle for holding the saw.
Tool blade is single sided or double sided. The convenience of double-sided blade is that the metal saw blade wears out quickly, you must constantly update it, and when there are two sides, you can do it less often.
Inserting the blade into the mounting frame, it is important to do it correctly, otherwise the cutting speed will decrease, and thus it is possible to break the saw.
In professional metal saws you can also adjust the angle and make it 45, 90 or 180 degrees.
For aerated concrete and foam concrete
To cut aerated concrete or foam concrete you need to buy specialized tools. Such saws have a specific design with pobedite tips. The teeth of the tool cut more firmly into the surface of the material.
A hacksaw for aerated concrete is used for both longitudinal and cross cuts. Saws for foam concrete are represented by three types of cutters:
- 2-2,5 mm. used for small parts and neat carving;
- 3-3,5 mm. used for medium size;
- 4-6 mm. the product is large, difficult to cut.
Hacksaw for drywall or circular saw is used for cutting of the material and also with it cut various apertures. This saw is made from quality steel, so it is virtually impossible to break it.
The drywall saw blade is thin, the length of the blade does not exceed 20 cm, the tool has a convenient compact handle, so this saw cuts out various details and do it accurately.
What materials you will be working with?
Select a hacksaw that is suitable for your tasks will help the table:
|Type of sabre saw||Description|
|Wood hacksaw for straight cuts||Has a wide saw blade, widened at the handle and tapering at the end. Fine toothing with a height of approx. 3-4 mm runs along the edge. Working part length is usually 30-50 cm, so you can cut down trees in the garden, saw logs and large boards.|
|Jigsaw||This tool is used for cutting thin, wood-based materials. It is fundamentally different from a wide wood hacksaw. The saw blade is a thin metal strip with very fine teeth on the edge (its length is only 12-20 cm). It is fixed at both ends in a D-shaped metal bracket, with a handle on one side. This hacksaw can be used to cut shaped workpieces out of plywood and sheet wood Particle board.|
|Saws||Similar in appearance to a jigsaw, only the bracket is less curved and the saw blade is slightly wider. This tool can be used to cut branches and limbs from trees and for other work in the garden. Some models have a connector at the base of the handle for attaching a rod so you can reach high branches.|
|Metal hacksaw||Consists of a sturdy U-shaped or C-shaped bracket in which the saw blade is fixed on both sides. The saw blade length varies from 15 cm to 40 cm for different models. Sharp, fine-toothed saw blade is ideal for cutting sheet metal, metal rods, profiles, etc. Some of the tools have a blade angle setting that makes it possible to work at 55, 90 or 360 degrees.|
|Concrete Saws||The tool looks like a wood saw, but it has larger teeth with hard-carbide inserts (most often tungsten carbide), which makes the cutting part very durable and allows cutting hard materials. This saw can be used for concrete, foam concrete, aerated concrete or sand concrete. Working part length between 30 and 50 cm.|
|Drywall||This sabre saw has a narrow blade with a serrated edge and a tapered working section at the end. It enables both straight cuts as well as curved cuts (e.g. for cutting sheets for the installation of multilevel suspended ceilings with unusual shapes). The length of the blade is usually 15-17 cm, it is soldered into the handle as an ordinary knife, so c tool is easy to work.|
When you decide on the type of hand saw, based on the purpose of use, you need to understand in more detail what else, in addition to design features, distinguish between models.
How to saw a board straight?
If you do not have special tools, and you are only armed with a hacksaw, then the first step is to draw a line for the trimmer on which to make a cut. We put a board so that it was fixed and then at an angle of sixty degrees to our board we start sawing until the saw doesn’t go out of line, then we put the saw in a position comfortable for us and saw. For a more accurate cut you can use a bar, put it to the board to serve as a guide. You can make a simple device to help you easily cut the board flat. We make it from a scrap of board with two bars. Hold the board with your hand or knee, press the hacksaw to the stop and saw in the given direction. Actually it is not so easy to make a neat and square sawcut, especially if you are a beginner in this business. If you only have hand tools like a hacksaw and no handy workbench with a vice, it’s best to make a special device. It is a piece of wide board with two slats at the ends. one slat on the top side, and the second (on the opposite end) on the bottom side. The support bars are nailed strictly parallel to each other and to the plane of the base strictly perpendicular, one of them is designed to stop the cut board, the other. to stop at the edge of the seat of the stool. Press the cut board with a knee or hold a hand, convenience is also in the fact that so will not accidentally damage the stool itself with a hacksaw. If you do not have a device and you need to cut without haste, then at least do the following steps:
- Measure, using a pencil and measuring tool, trimmer line perpendicular to the board, then secure the board in a vise;
- then make the cut with the hacksaw (keeping the angle of about 60 degrees) and when the hacksaw stops knocking over, go to the usual 90 degrees;
- If it is tight, the wood is probably wet, so the teeth of the hacksaw should be lubricated with ordinary soap.
Generally, the most acceptable variant will be an automatic saw. circular or circular, but it is better not to use an angle grinder for these purposes, unless the quality is not very important. If you want to saw off part of the board exactly, choose the right tool. It is often more convenient to cut one or two boards with a regular hacksaw, i.e. a one-handed, cross-ground hand-held wood saw with teeth of the appropriate size. Make a proper marking. Use well-sharpened writing tools rather than scratching tools. For example, not a crayon, but a simple pencil. Measure out the right length and shape of the business piece of board, making two marks. Connect them with a straight solid line using a ruler. Keep the board stationary when working with it by securing or pressing it firmly against a workbench, threshold, bricks, stool, bench, or other support. Use your knee, if there are no other options. Lay the board up with the marking up. Don’t put it on edge. Make sawing (i.e. the beginning of sawing) with a neat, but sure movement. Usually from yourself, but to some people it’s more convenient. Experienced craftsmen place the board so that the line for the marking trimmer was between the hacksaw and the eyes, that is, was clearly visible. Do not aim the hacksaw perpendicular to the boards. Consider angles a little more polar or steeper than 45 degrees convenient, but not much. Saw and periodically sweep sawdust from the marking. After you finish the work the marking should not be sawn off completely. Well, I think the straight sawing across the fiber board has already been explained exhaustively in other answers. I will tell you about the longitudinal sawing of the board. an even removal of a reviewable edge. For even cutting of the board along the fiber, you can make such a platform. It is suitable both for sawing on a circular saw and for guiding a hacksaw blade. The construction is not complicated. We need a board with a straight edge as a base, or 15-20 mm thick plywood. Several bolts M6 or M8 with wing nuts, and the same number of clamps made of steel strip about 3-4 mm thick. T-slots are made across the board with a cutter of the same shape. Bolt heads are inserted into them. On the upper plate of the platform, across, between the slots for bolts, we glue strips of sandpaper about 5 centimeters wide, so that the sawn board would be better fixed and would not slide on the platform. In the front and back of the platform, handles can be made to hold and guide, when sawing on the circular saw. The operation of this device is simple. Board to be evenly cropped lengthwise, clamped under the clamps, aligning the future line for the cutting trimmer with the edge of the platform. The platform is brought by the edge to the disk of the working circular saw from the side and we begin to cut the upper board.
What the design should be
The structure of the hacksaw is quite clear. in the middle of the two ends of the staple, resembling the letter “C”, stretches a hacksaw blade with fine teeth, which is the working part. For fixing use either a nut with a wing nut, or a special small lever.
How to Choose the Right Hacksaw Blade
The second option, due to its versatility and ease of installation, is much more expensive than the first. The difference between electric tools with a hacksaw on metal, and handheld hacksaws is that they do not need electricity to use, they are easy to work and maintain due to their light weight.
For easy work in hard-to-reach places, a hacksaw handle is used. This mini metal saw is used for working with broken blades. It takes up less space, but is just as effective.
How to cut properly with a hacksaw
Master the technique of cutting with a hacksaw for metal is not difficult. It is important to adhere to the following recommendations.
- The blade provides a cut only when moving forward. Therefore, physical effort is exerted on these intervals. When returning to the starting position, the pressure on the saw eases, lifting the handle slightly. Such manipulation prolongs blade life.
- Choose a tool with a comfortable handle. U- and L-shapes are preferred. Handle as a tubular stick when sawing slips, does not allow you to firmly fix the hacksaw with both hands.
- Setting the blade is carried out taking into account the location of the teeth. They must point in the direction of the cutter (master).
- If you use a sliding model, you should start by adjusting the length of the tool to the size of the blade.
- Attention must be paid to tensioning when installing the blade. Overstretching a cutting element can break at the slightest misalignment. With insufficient tensioning it will be impossible to cut, the blade will slip from the surface of the material being cut.
- To avoid too much heat, it is a good idea to put a few drops of oil in the cut area.
- When sawing metal pipe or angle there is no need to make a cut to the end. Sometimes the part to be cut is simply broken by bending the sagging part. But it is necessary to pass with the hacksaw at least half of the thickness of the workpiece.
- It is better to fix the part in a vice in order to obtain a straight cut. This is especially important when working with pipes and angles.
- When working with hard metal, you need to exert more force on the movement of the tool away from you. This will allow the teeth to sink into the flesh faster. The degree of force must be adjusted depending on the density of the workpiece used.
- If you need to saw a thin sheet metal, it is clamped between two bars, fix it in a vise. Release the workpiece only after cutting is complete.
Theoretically, you can cut pretty thick metal with a hacksaw, but it takes a lot of effort and time. Therefore, massive workpieces are cut in alternative ways. And for pipes it is better to use a pipe cutter, as an ordinary metal blade slips when passing on the cylinder, which is fraught with obtaining an uneven cut. The handheld tool is capable of working with thick sheet metal, pipes, rebar, rolled section metal.
Choice of metal saw and blade
What you need to pay attention to when choosing a hacksaw for metal:
It is desirable that during the movement in any direction, the tool moves without “jamming” and easily.
When setting a task in front of the hacksaw, consider the size of the machine.
Look at what frame the tool has. It cannot be replaced, but the blade can always be changed. A good frame is made of strong metal or composite materials.
It’s not bad if the tool changes the angle of the hacksaw blade. It means you can get into hard-to-reach places.
The handle on a hacksaw must be smooth and solid, otherwise it could break. It also has finger stops. If it has no defects, then it is a high quality tool.
I. It should not have traces of cracks and corrosion. The blade must be smooth and clean. Check it: first bend it, then release it, it should return quickly to its previous position.
II. State whether or not the tool can be mounted at a 90 degree angle. If so, buy it without hesitation. The more teeth per inch you have, the easier and faster you can cut the metal.
Hacksaws are a universal tool, they have very small teeth. The tools are used to work with the following materials: foam plastic, plexiglass, plastic, ceramic, laminate, chipboard and wood. Smooth edges on finished workpieces.
carefully study the instructions, clarify what kind of work you need a hacksaw for, consult with experts, find out the price of the tool. Then get the right product for the right price.
INTERTOOL wood hacksaws, metal hacksaws
The easiest and one of the most common ways to work with metal is with a metal hacksaw. If used properly this tool will last you a very long time. The main thing is to change blades in time, choosing the appropriate pitch and type of blade.
The design of metal hacksaws is very simple: a narrow hacksaw blade is stretched between the two ends of a U-shaped more often metal staple. no special skills are required to work with the metal hacksaw, the principle of operation is very similar to that of the wood hacksaw.
Types of hacksaws for metal INTERTOOL:
Making a conscious choice, most often the buyer pays attention to the system of attachment of the blade. It comes in two kinds:
There are also metal hacksaw blades with the ability to set the blade at an angle of 90 degrees. and 45 deg.
Saws with the second method of setting and tensioning the blade are more expensive than the first option because of their versatility and quickness of setting/removing the blade.
The advantage of metal hacksaw blades, as opposed to power tools, is the possibility of working in the field, since no power grid is needed, the low weight of the tool, ease of maintenance and operation. Also metal hacksaw is often used in repair and construction works, when it is necessary to accurately and precisely cut small metal or wooden workpieces.
As for the blades, there are a large number of them on sale. The price of hacksaw blades also differs. This will be affected by the number of teeth per inch and the type of blade (knurled or bi-metal). Bimetal blades are more flexible, very seldom break and are therefore more expensive than hardened blades. It’s important to understand for yourself when buying a blade what kind of material you are going to work with.
INTERTOOL metal blades:
Blades are available in 18, 24, 32 teeth per inch. The more teeth on the blade, the better and faster it is to cut softer materials and vice versa. Blades should be installed so teeth are facing away from you. It makes cutting much faster and easier.
Wood hacksaws are as popular as bandsaws, chain saws, pruning saws, and jigsaws. Every craftsman should have a wood saw in his arsenal of tools.
Wood hacksaw is used for cutting wood, joinery works, installation of wooden constructions, trimming large branches of trees and many other works related to cutting various types of wood.
Wood is a fantastic material that can take on any appearance, only sometimes that appearance is limited by human imagination. And as one of the tools designed to give a proper look is a wood hacksaw.
There are quite a few shapes and kinds of hacksaws. So before you get to work, there are two factors to consider:. What kind of wood you will be sawing;. How important is quality of cut for you?
Based on these considerations, you can say that a hacksaw with a big tooth and a long blade is good for rough and fast cutting. And if quality is your first priority, a fine-toothed hacksaw is your choice. Do not forget about the number of teeth per inch, the more teeth per inch, the better the cut will be. If you see the TPI designation on the blade of a hacksaw, this is nothing but the number of teeth per 1 inch.
The choice of the saw depends on the size of the workpiece, so it would be very helpful to have not one hacksaw, but several for different types of work on wood.
Hacksaw blades with hardened tooth will last a very long time in the household, but do not forget that such hacksaws should not be sharpened. To distinguish a hardened tooth, you just need to look closely at the color of the teeth. If the teeth are hardened, they have a black color with a bluish cast. And for sharpening the non-hardened teeth of the hacksaw a file with a very fine notch should be used. To sharpen one tooth, just a few strokes of the file are enough to make the tooth sharp again.
The main purpose of a wood hacksaw is to cut wood materials. Blade, teeth, handle included. The blade is the working part of the tool. Sawing wood is divided into several types. First. cutting into pieces of dry materials, i.e. boards, logs, plywood and other junk. The second type is garden pruning, trimming other trees. The processing of the following materials is also carried out:
The tool, designed for carpentry work, is poorly suited for the care of trees, and will not cope at all with metal workpieces. There are no universal models, so the VyborExperta team.ru recommends the following brands, taking into account the scope of application:
- Armero A531/400. for woodworking in the home workshop;
- The Gross Piranha 24111 is the choice of the professional carpenter;
- Vira 801010. for the locksmith shop;
- Skrab 28154. for trimming tall trees in the garden;
- Opinel 2. the choice of gardeners and campers;
- Stanley FatMax. the professional solution for demanding tasks.
All models presented in the review are worthy of attention, but only the most reliable, productive and convenient tools were awarded the title of best in class.