How to choose a construction knife with replaceable blades. Mounting knife: varieties, application, choice. Which knife to choose
Or it is also called clerical - this is a real find. After all, it is practical and needed everywhere: needlewomen, designers, builders, repairmen household appliances etc. Initially, as soon as such a knife was developed, it was intended for cutting paper, but very soon its scope expanded significantly. Now the construction knife is used for cutting cardboard, paper, foam, leather, thin plastic, stripping wires and the like.
Today, there are many different variations of knives on the market, but among specialists there are two main types and they are divided according to two parameters:
According to the material from which the body is made.
Why these settings? The answer is simple, it is these two parameters that most of all pay attention to when choosing a construction knife.
- knife with 18 mm blade.
At repair work ah, they use a knife with a blade width of 18 mm, it is he who is called a construction knife. The remaining two types are used more for home or design work.
construction knife is very popular, and it is in the bag of every specialist. And this is no accident, because a construction knife has a number of advantages that you need to know about:
Versatility and wide scope of application;
It does not require sharpening, as most knives have a blade that breaks off, and in those knives where the blade cannot be broken off, it simply changes to a new and sharp one;
Safety in use. It has a special lock on the body that securely holds the blades in the installed position. In addition, you yourself adjust the length.
What to look for when buying a construction knife:
We decide on the material of the case;
It is imperative that the knife fits well and comfortably in the hand;
It is better to choose a knife with metal fasteners and buttons for adjusting the blade, since plastic is not very durable, especially if the knife is used for repair work;
Pay attention to the quality of the blade, it is desirable that it be made of high-quality stainless steel.
By affordable price You can in the online store "Master Plus". We work for you! Enjoy the shopping!
Each of us is familiar with such a tool as a knife. We use knives in the kitchen, there are stationery knives for papers, and there is a large diverse group of special knives - construction knives.
Their diversity is characterized by design differences and tasks that are solved with the help of these knives.
Construction knives differ from the rest in their special purpose - to cut very hard, dense, thick and durable materials, so the blades are made of special high-strength alloy metals or stainless steel. The cutting part can be very diverse, which even allows you to cut out patterns on linoleum when laying it. Structurally, the handle of construction knives is adapted to the hand of the master, mainly made of plastic and covered with an anti-slip material such as rubber or rubberized plastic. You can buy them in special hardware stores, for example,.
Let's understand the variety of construction knives
Structurally, they differ from each other in that they are folding or pocket, where the name speaks for itself, and knives that have the ability to replace the blade.
The type of knife is determined by the main task that is set when carrying out certain works:
- Corner knives are used when working with wallpaper, leather products, linoleum, if necessary curly cutting, cloth, plastic, gardening work;
- Special knives for cutting special coatings, for example, carpet, drywall;
- Folding or mounting knives for working with electrical wires and cables. These knives have an electrically insulated handle.
For right choice construction knife at the link, you must be guided by the following basic criteria:
- The size and thickness of the cutting part affect the strength of the tool;
- The ability to sharpen or replace the blade increases the life of the knife;
- The presence of guides for the blade allows you to cut thick and layered materials;
- Duration of operation of the knife provides a titanium coating of the blade;
- The presence of markings on the blade allows you to adjust the depth of the cut;
- The segmented blade does not need to be sharpened, you can simply break it off and the next section will be just as sharp. When the segments end, the blade changes to another. This is the most popular type of construction knife;
- Particular attention must be paid to the attachment of the blade. Exactly this weakness in the design of many construction knives, on which the safety of working with it depends.
We have considered all the features of construction knives and are sure that everyone will now be able to choose the right one for themselves. essential tool in accordance with the assigned tasks. Good things to you.
A builder needs a knife no less than a hunter's knife and may be needed at any moment. Therefore, its permanent place in a narrow pocket of overalls or in a bag on the belt.
What should be a construction knife. Which to choose?
- He must be long-lived. With daily use, one year without breakdowns is a good indicator for an inexpensive tool;
- The blade ejection mechanism should be light and simple. The performance of the tool depends on this;
- It should be light. Carrying in a simple trouser pocket should not be felt. Only in this case the knife will not be burdensome, and always at hand;
- The blades of the knife should be with breaking segments.
Which knife to choose.
Consider the most common options for knives with interchangeable blades.
All are about the same price. Weight and other external characteristics do not differ. The only difference is the different mechanism for fixing the blade. That's where all the rub is.
In the first knife, the blade advance mechanism is the weakest. It's rather office version knife, not construction. It stops holding on the second day.
The second type of knife is the most common. But the mechanism also lets him down. The clamping wheel holds securely, but you need to twist it a little, literally half a turn.
If the knife has one owner and the above condition is met, the knife can serve for a long time. But if you pinch the wheel while fixing the blade, the screw makes dents in the body, which then prevent the blade from moving freely.
So, if in the first copy the blade stops holding as it is used, then in the second, on the contrary, you cannot move it.
The most reliable mechanism turned out to be in the third copy. The knife securely fixed and extended the blades throughout the year.
Then the plastic handle came off, and I decided it was time to change. And threw it away. But since I didn’t get a new one, I decided to use the old one, temporarily. And picked it up. The time period has been extended. The knife continued to serve reliably, without deteriorating its qualities. On the contrary, without a plate, the knife became weightless. Of course, this option is not suitable for a drywall worker. But if the knife is needed for auxiliary functions - sharpening a pencil, opening bags or cutting mosaic sheets, then this is the best option.
Now, when I buy a new knife, I immediately break off the plastic handle.
But this knife also has two options. The first is expensive, made of stainless steel. Great option. The second is cheap, made of mild steel. This is an unfortunate decision. The blade, during operation, cuts through the body, and it is no longer possible to work with such a tool.
two "almost" identical knives
knife blade attachment mechanism
How to change the blade in a knife.
This is the most simple task, even a child can do it. But if you have not seen how this happens, confusion may arise. In the video below, which shows the best (of the three considered) version of a construction knife, the moment of changing the blade on a construction knife is present.
The sharpest construction blades are shown in the video.
Every self-respecting person, one way or another referring to the construction fraternity, has his own construction knife with interchangeable blades. It can come in handy in any situation, whether it's opening a bag of putty or cutting out a sheet.
How to choose a knife?
In order for a mounting knife with interchangeable blades to serve faithfully, it is required to initially select it according to the correct parameters, which, however, everyone sets for himself. Here's what to look for when buying:
Advantages of this type of knife blade
Thanks to the long blade, they can be used very flexibly, such as cutting through even thicker materials such as foam. The blade is fixed in the appropriate position that they need for certain jobs, such as removing cables.
The disadvantages of incisors are
In case of lateral forces, the blade can break very quickly and injury can occur. Because the blade does not retract into the housing, there are many accidents in practice when users move around with the blade free-standing or leave it extended. By simply breaking the front segment, you cut the blade quickly and conveniently. . While some of the cutters are also known as carpet knives, a carpet knife is always equipped with a trapezoidal blade or hook.- the most important thing is that the retractable mechanism in the construction knife should work perfectly. Indeed, often the speed and coherence of the work process depends on this;
- construction knives with a retractable blade should be without various "bells and whistles" in order to perform the simplest function - to cut;
- the weight of the knife is great importance- the lighter it is, the more convenient it is to carry it with you, putting it in your pants pocket.
You should pay attention to the knife slider - if it is plastic and has a rather dubious appearance, then most likely it is not a construction knife, but a clerical knife that is not suitable for applying force. Due to pressing, the mechanism breaks down very quickly and ceases to fix the blade.
The switches are too quickly out of control when side forces are too high, so these cutters are not suitable for heavy cutting. Thus, the carpet knife has a replaceable trapezoidal blade or hook blade. Duden refers to a carpet knife as a knife with a replaceable blade.
Disadvantages of cutters to protect hooks
Maximum safety of your sales and / or production goods from damage caused by the blade. Cutting with cutting knives should only be done 1-2 times, as they must be guided under right angle to cutting material. Since you are only cutting off a very small area of the blade, only this area is worn out and the blade needs to be replaced more often, such as a trapezoidal blade carpet knife.
- Maximum safety for the user from any cuts.
- Only one knife for all activities.
- Blades feel faster.
A knife with a plastic wheel is already better if you do not clamp it too hard. After all, if you pull it once, you simply can’t unscrew it the second time, and you can safely throw the knife away.
The most durable of the knives for construction work presented in the hardware stores are those that are equipped with a metal wheel and the knife itself is also made of metal. But when buying, you should be careful not to accidentally buy a knife made of mild steel, but stainless steel will be just right.
All knife functions can be found. The essential feature of scalpels is a very thin handle that resembles a pencil. Therefore, scalpels are particularly suitable for precise incisions. Another feature is a very diverse selection various forms blades.
In addition to the medical sector, the scalpel is also used as a deburring machine in manufacturing plants. While the scalpel blade is optimized for maximum sharpness in the medical field with a very short life, spare blades for the manufacturing industry are optimized for a long life with relatively high sharpness. The material used for the scale knob is usually stable aluminum partially coated with a soft trowel.
The most popular is a knife with replaceable blades of 25 mm in size - it is powerful enough and suitable for most jobs. But the blades for a construction knife 18 mm are thinner and will fit only for petty work– sharpening a pencil or cutting wallpaper.
A utility knife is a useful tool for a wide range of tasks. With it, you can strip the cable from insulation, cut linoleum, wallpaper, carpet or other materials. Of course, in order for the product to serve for a long time, fulfilling all the duties assigned to it, you need to responsibly approach the choice.
For medical scalpels, the blades are the same for all manufacturers. Unfortunately, however, you differed from manufacturer to manufacturer in connection with mounting or assembling knives. Scalpels for industry or hobby areas also have different perforations and, above all, strengths.
Benefits of scalpels
Therefore, you must make sure that these blades fit into your handle. Just send us a photo of your handle and your blade and we'll be happy to advise you on the right choice.
The disadvantages of scalpels are
The risk of injury is very high as the blades are very sharp and the knives have no protective mechanics. Heavy cutting jobs, such as cutting cardboard boxes, cannot be done with a scalpel because the cutting edge breaks too quickly. You have bought a toolbox but you don't know what to put in it.Construction and stationery knives: a competent approach to purchase
So, in addition to the price, the main attention should be paid to the following details:
- Design. A knife with a retractable blade is convenient for a wide range of jobs that do not require too much load on the cutting part. A tool with a fixed blade will allow you to cut thick material without the risk of breaking the blade. Specialized wallpaper knives require a ruler on the body for maximum work accuracy.
- Blade features. The thicker the blade, the stronger it is. For products with retractable blades, the presence of segments that increase the operational period and increase safety is considered mandatory.
- General quality. The handle must have rubber inserts for ease of use, preventing the tool from slipping out, the locking mechanism must firmly hold the blade, gaps are unacceptable. For greater durability, a titanium coating is sometimes applied to the cutting edge, which retains its sharpness for a long time even with constant work with cardboard and other cellulose-based materials.
Construction knives in sheaths, retractable models - all this is presented in a wide range in the Leroy Merlin network. We cooperate exclusively with the best suppliers, and therefore all products are certified, durable and safe to use. Attentive and qualified sales consultants are always ready to help customers buy the best knife model with delivery!
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It is important when you need to install a storage shelf, place a refrigerator, washing machine, or even a bed. Your square, as its name suggests, will help you place everything correctly. An ego-type wood saw with an 18-inch blade will make the job easier. Choose a combination saw for cutting and tearing. This requires a few shortcuts, but it's easier. Hacksaws, good quality, you will be more than useful.
A construction knife is an essential tool for builders. This tool can be used at any time, and for effective use must meet a number of requirements.
The construction knife consists of a plastic handle and a retractable blade. The blade consists of a certain number of segments, which are removed as needed. They are available in 9, 18 or 25 mm widths. The width of the blade is chosen based on the specifics of the work. For example, to work with drywall materials, you should take a knife with a maximum blade width.
According to the classification, construction knives are distinguished for:
- cutting bags, wallpaper, elastic coatings, polyethylene;
- cutting wires and cables;
- curly cutting on wood, plastic and paper products.
There are also universal models of knives that can be used for any construction works.
Criteria for choosing a construction knife
When choosing, you should pay attention to the quality of the metal from which it is made. It is good if the knife blade is covered with a special protective layer - this will extend its service life.
The knife should be sharp, light and compact. When choosing a construction knife, it is important to pay attention to the locking mechanism. It can be of different quality, and this particular element often breaks. The most popular and relatively reliable - with a spinning wheel mechanism. He holds the blade securely. During its operation, it is necessary to tighten literally two turns, since if you pinch the wheel to fix it, the screw can make dents on the blade, which will subsequently prevent further extension.
The handle of the knife should be durable, comfortable, non-slip. It is good if there is a special container on the handle where you can store spare blades.
The more expensive the knife, the more durable it is. Well, if the blade is made of stainless steel. An inexpensive knife is made from cheap material and often breaks at the most inopportune moment.
