Overhead door hinges without mortise: design features, advantages and disadvantages, installation of the structure

The process of installing interior doors is a responsible job that is best entrusted to professional installers who actively offer their services in almost every region of our country. When inserting locks and hinges, a special power tool is required - a milling cutter and considerable experience in performing such installation processes. If this is not possible and the work has to be done with your own hands, the home craftsman is recommended to use overhead hinges without insertion.

Overhead hinges on an interior door in an apartment

Furniture hinges for cabinet doors: how to choose a model with a 45, 60 and 90 degree closer

In modern production, a large number of accessories are used. In this article we will look at furniture hinges for cabinets. These are mechanical devices for opening and closing swing doors. There are many different models sold in stores, and before purchasing, it is advisable to know which option will suit your facades. We will tell you about the design and installation features of canopies.

Hinge furniture hinge

The hinge is the familiar awning. The operating principle of the design is implemented using a connecting rod, which serves as a hinge during longitudinal sliding and provides a movable connection of two parts (cards) into a kinematic pair.

This type of fastening is used everywhere for furniture fittings. Their distinctive feature is that they are installed inside the furniture, preserving the aesthetics of the facade of the set. Progress here, too, is moving towards more complex designs - there are a lot of all kinds of modifications and improvements. I wouldn’t be surprised if in some fifty years “smart” hinges start going online, opening through a mobile app and dancing a little at the same time.

Types of furniture hinges

Science has not yet advanced that far and the structure of this object is quite simple. Depending on the method of fastening the door and the design, there are several types of furniture hinges.

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Structural ones differ in the number of hinges. Among them:

half-hinged - one component has a static pin, on which another, attached to the door, is placed on top, like a cap. The only fastening that allows you to remove the door without removing the hinges;
single-hinged - several cards arranged in a checkerboard pattern are combined using one rod;
four-hinged - the most common, popularly known as a frog, consist of a mounting plate (base), a movable mechanism (arm) of four hinges with a spring and a cup for which a recess is made in the thickness of the door.
eight-hinged - used in cases where there is nowhere to cut a recess, for example, for glass or thin doors.

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According to the method of attaching the door to the furniture frame, the hinges are divided according to the type of location of the door leaf relative to the body:

overhead or external - the door is located on top of the body, the moving mechanism is without bending;
semi-overlay or middle - used when two doors are attached to the frame on both sides, each of which extends half the width of the frame;
inset or internal - the door is recessed, the body borders it;
corner – designed for corner furniture, provide opening at angles of 30°, 45°, 90°, 135° and 175°;
adit or straight - fastening the facade to a false panel, or body, joint to joint, in one plane;
inverse or rotary - allow you to open the door almost up to 180°, and can be external, middle and internal;

Hinges are also divided into additional subtypes: mezzanine for cabinets that open vertically upward; secretory for a door that folds down; card for folding tables in order to ensure a single plane and a lot of completely non-standard options for all occasions.

Features of choosing non-mortise hinges

When going to the store, you should check the weight of the door in advance, since the characteristics of the hinges and their number depend on it. You need to know that manufacturers usually make their own recommendations for the selection of hinges depending on the weight of the doors. The number of loops can be determined using the diagram below.

The number of loops and their installation location can be determined according to the diagram

Explanations for the diagram:

Option 1: the standard door is mounted on three hinges (1 at the bottom, 2 at the top).
Option 2: the lightweight door is mounted on three hinges (at the same distance from each other).
Option 3: a heavy door is attached to 4 hinges (2 on top and 2 on bottom).
Option 4: the high door is mounted on 4 hinges (at the same distance from each other).
Option 5: classic loop arrangement.

The graph shows what width and weight a door can be placed on 2 hinges.

In addition to the number of loops and aesthetic qualities, when choosing loops you need to pay attention to the following parameters:

It is also important to decide what they should be: left, right or universal. The universal hinge can be installed on both the left and right side, while the left can only be installed on the left, and the right can only be installed on the right.
Door hinges are usually made of steel, brass, or stainless steel. Steel hinges are the most affordable, but the decorative coating applied to them wears off quickly. Another disadvantage is that they are sensitive to humidity. Stainless steel hinges are more durable. They are not afraid of humidity and critical temperatures, but they can only be of one color - steel.

Loops in various colors and sizes

It should also be remembered that the more massive the door, the thicker the hinges should be. The standard width is about 2.5 mm (suitable for interior doors), but they can be thinner (for furniture) and thicker (for outdoor doors).
When purchasing hinges for entrance doors, preference should be given to those equipped with a special anti-removal cap, which protects against unauthorized removal of the door.

Installation process

Determine the location of the furniture hinge cup. It usually has a standard size of 35 mm. The optimal distance from the free edge is from 80 to 120 mm. At this distance, we make an indentation from the edge of the end of 22-23 mm and mark it, making a small hole so that at a critical moment the drill does not slip from the intended point.
Using a 35mm Forstner drill, drill a recess for the cup. Without fanaticism, so that the hole does not suddenly turn out through.
Using self-tapping screws or other fasteners provided in the kit, we first fasten the hinge to the facade, then to the box forever. The design of modern furniture hinges provides adjusting screws that allow, without remembering someone’s mother, to adjust the tilt of the facade left and right, or up and down, if necessary.

Installation

How are such products attached? To install butterfly hinges you will need the following tools:

Screwdriver
Self-tapping screws,
Drill,
Awl,
Pencil,
Roulette.

First you need to choose a mounting location . To do this, use a tape measure to measure about 20-25 cm from the top and bottom edges of the canvas. This will become the starting point for each loop. To reduce pressure on the top hinge, attach the bottom one further from the edge.

Since installation is carried out without insertion, immediately attach the plate to the end of the door and mark future holes with an awl. After this, carefully drill them, this is necessary so that the screws can be screwed into the canvas without effort.

Then you need to decide where to attach the plates to the door frame. To do this, attach the door and roughly outline their location. After this, unscrew the hinges and more accurately mark the drilling points.

All the holes are ready, which means it’s time to apply the sheet to the opening and secure both plates with self-tapping screws. Check the movement of the door , because in some cases defects occur, however, they are not difficult to eliminate.

Types of furniture hinges by design

There are many hinges and canopies used to attach a swing door to the frame of a cabinet or cabinet. Basically, in modern furniture production, four-hinged hinges , which allow the facade to be adjusted in three planes at once:

higher lower,
left/right,
to/from the facade.

All of them consist of two interconnected parts - a bowl with an elbow and a strike plate . Often the strike plate is called a mounting or mounting plate. This article will focus specifically on four-hinged hinges.

Other types of furniture hinges can be combined into one large group as “bowlless” hinges.

piano hinges, card hinges, pin hinges, and heel hinges, known to everyone for fastening interior doors and facades in old furniture . They are rarely used in modern furniture. For example, piano, card and mortise hinges can be used to attach tabletops to the base, movable legs in book-tables. For ordinary cabinets, brass decorative hinges are used as additional decor.

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Overhead hinges that do not require drilling of the facade . They come in handy when the thickness of the material chosen for the facade does not allow installing (embedding) a four-hinged hinge due to the depth of the bowl. The only drawback of such hinges is their rigid fastening, which does not allow adjustment in three planes, like four-hinge hinges.

Hinges for fastening specific facades . For example, prefabricated facades made of aluminum frames of different widths are installed on special hinges - you can purchase them together with the profile. Please note that, just like regular four-hinged hinges, they can be overhead or internal, designed for corner cabinets of 45, 135, 180 degrees and facades covering the end of the case.

Advantages and disadvantages of overhead loops

Overhead hinges are widely used for installing interior doors, due to the presence of many undeniable advantages:

Low retail cost of products due to the small amount of metal.
Easy to install - no special router required.
Considering that such hinges are installed mainly in inexpensive doors with honeycomb filling or solid pine, the hangers can be fixed with a simple screwdriver.

Tightening the screws on the hinge

These products are made in a universal version and are not divided into right or left.
During normal operation of such hinges, the manufacturer guarantees their use for at least 7 - 10 years, without the need for replacement.
There is also a special category of overhead hinges on sale, made with curved base plates. Such products are ideal for installing doors with rebates.

At the same time, such products have several important disadvantages:

As a rule, they have a low load capacity. Recommended for use on door leaves weighing up to 30 kg.

Lightweight door leaf

To dismantle the door leaf, you will have to unscrew all the screws on one of the plates, since the hangers are not equipped with a removable hinge rod.
Given the weak material of lightweight panels, the screws can become loose over time, which causes the door to warp.
Before installing such hangers, careful preparation of the door end will be required, since even the slightest unevenness can cause a loose fit, which will significantly complicate operation.
To install the door leaf, you will need to hold it suspended or use spacer plates of the required thickness.
Many consumers do not like the appearance of the overhead loop. In the open position, the large plate looks like a frame through which part of the blade material is visible, while the small part has insignificant dimensions and does not inspire confidence.

Overhead hangers in open state

Almost all the disadvantages are subjective and do not affect consumer demand.

Types of four-hinged furniture hinges

According to the design, according to the way the bowl with the knee is attached to the striker, four-hinge furniture hinges can be of three types:

Slide-on—the parts of the loop are inserted into each other and connected using a fixing screw that has special notches, thanks to which it reliably “holds” the connection even in a weakened state. This type of loop is the most common.

Clip-on - the parts of the loop are connected by simple snapping, without screws. The facade can be removed and installed without using any tools - just pull the latch. Clip-on hinges are also called quick-installation hinges.

Key-hole – on the shoulder of the bowl with a knee there is a hole resembling a key hole in shape - a keyhole. The arm and bar are secured by passing the head of the fixing screw through this hole.

Regardless of the design, all of the above types are divided according to their purpose and installation method - what facade is used in the furniture and how it is attached to the body.

90 degree hinges

*The designation 90 degrees in this case is conditional, it is used to mark hinges that open at a right angle. In fact, the door travel is somewhat greater, reaching about 105-120 degrees when opening. Some manufacturers and sellers of accessories may label this type not “loop 90”, but, for example, “loop 110” - there is no mistake here.

The 90 degree overhead (external) loop has a straight “shoulder”, without bending. Used for facades that completely cover the ends of the side walls of the body (without taking into account the technological gap, which can be 1-5 mm).

Half-overlay (middle, half-outer) loop 90 degrees , the shoulder of the bowl with the knee can be distinguished by a medium bend. Rarely used. For example, in kitchen two-row horizontal cabinets for attaching the bottom door and in three-leaf wardrobes for attaching the middle facade.

The 90-degree inset (internal) hinge is distinguished by a large bend on the “shoulder”, due to which the inset door is carried out when opened outside the body. Rarely used. For example, in office furniture, in which the body is made of thickened 22 mm chipboard and the internal facade emphasizes this detail.

180 degree hinges

A straight (gauge) hinge for false panels is designed for attaching the facade to the sidewall, which is located in the same plane. Most often used in corner kitchens, when using the appropriate corner sink module.

The 165-degree carousel (crab, crocodile, transformer) hinge is recognizable by the characteristic complex shape of the bowl's elbow, which ensures that the door opens completely relative to the body - almost up to 180 degrees. It can also be invoice, semi-invoice and inlay. Differs in the shape of the shoulder.

Types of corner hinges

A 30-degree corner hinge “presses” the façade, located at an angle of 90+30 degrees relative to the body. It is most often used in beveled end cabinets of kitchen units or wardrobes. Installation angle – 120 degrees. Some manufacturers mark it by installation angle, i.e. called a 120 degree loop.

The 45 degree corner hinge is used in trapezoidal single and double door cabinets - for example, kitchen or dressing rooms. Similar to the previous type, it can be called by the angle of installation - a 135 degree loop.

An angular loop of 120-135 degrees most often serves as a connection between two facades, fastened together at a right angle of 270 degrees, which come off like an accordion. In this case, the door without a handle is attached to the body using a carousel hinge from the previous category.

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Corner hinges with a negative opening angle are used extremely rarely, due to design features: end cabinets, as a rule, serve as the end of a row of furniture and it is more convenient to open the door from the other side. But there are projects in which it is more expedient to implement the opposite solution.

The photo shows the main types of standard furniture hinges, without closers , ensuring smooth closing. Hinges with closers are classified similarly - depending on the type of facade and the installation angle relative to the body. They differ in appearance from standard ones only in the shape of the shoulder, inside of which a special movement-absorbing mechanism is built. Also, the closer may not be built-in, but overhead - as, for example, a manufacturer such as Blum offers. But the bulk of offers on the market still do not imply the possibility of improvement. Therefore, if you are determined to install facades with soft closing, without annoying knocking, purchase fittings with closers right away. True, it costs a little more. Before purchasing, I recommend that you read the review on furniture hinges with closers.

A separate group of furniture hinges is for glass facades, with and without drilling glass. Review on glass hinges here.

Possible errors when installing overhead butterfly hinges and ways to eliminate them

When installing overhead butterfly hinges on their own, beginners may encounter a number of serious problems that lead to negative consequences, including complete replacement of the door leaf. To eliminate these errors, experts advise following a number of recommendations:

Loose fit of the hinge plates with subsequent loosening of the mechanisms and distortion of the door. Before taking measurements, marking and fixing products, it is necessary to carefully check the tightness of the steel plate and, if necessary, level the installation plane.
If the door cannot be aligned where the plate fits, it is recommended to use wooden wedges, matches or other available materials to eliminate the defect.
It should be noted that many hidden hinges are sold with a ready-made set of spacer elements, with which you can ensure their tight fit to the end of the blade.
The self-tapping screws rotate during fixation - this problem often arises if the hinge is mounted in an economy-class canvas with a thin wall and honeycomb filling. To eliminate such problems, it is recommended to immediately use a self-tapping screw with a maximum thread diameter and a sharp edge.
When screwing a self-tapping screw, it is also important to control the tightening force, since there is always a risk of stripping the thread.
After several months of intensive use, the canvas sags due to loosening of the screws. If such a problem occurs, it is recommended to immediately lift the blade and try to tighten all the hardware until it stops by hand. If this does not help, each self-tapping screw is replaced with a longer one with a different thread pitch.

Sagging door leaf

If the door has sagged due to a broken thread in the structure of the door leaf material, it is recommended to prepare a special composition - PVA glue with sawdust, which is carefully filled with holes for the screws. After polymerization of the material, it is necessary to screw in the screws again, which guarantees their strength and reliable fixation of the loop.

High quality interior door with butterfly hinges

If you strictly follow the professional advice listed above, the installed overhead hinge will be used no less than the door leaf itself, without the need for major repairs or replacement.

Types and characteristics of furniture hinges, fastening rules

The wear resistance of cabinets, tables, bedside tables largely depends on the quality of the fittings. This is a huge category of products, including hundreds of varieties of products, from guides to confirmations. Furniture hinges are irreplaceable elements; they allow you to conveniently open the doors at a certain angle. A few years ago the choice of this additional equipment was small, but today the situation has changed. Accessories such as hinges are classified according to design, materials of manufacture, and installation method, so to select the correct elements you need to know many nuances.

Basic characteristics
Basic designs
Cupless
Overhead and semi-invoice
Quadruple joint
For specific facades
Manufacturing materials and design
Varieties according to installation method
Tips for choosing
How to attach and adjust
Video

Basic characteristics

Furniture hinges are semi-mechanical devices for fastening the facade to the furniture body and making doors comfortable to use. Installation is carried out using self-tapping screws. The cup of the furniture hinge is fixed to the facade, and the mounting strip is fixed to the frame. There are several types of products depending on the opening angle:

45 degrees. Used for corner cabinets, trapezoid-shaped cabinets with one or two doors. This could be kitchen or wardrobe furniture.
90 degrees. Allows doors to be opened at right angles. There are several types of loops. Overlays do not require bending and are suitable for facades that completely cover the side walls. Semi-overlays have a medium twist, while internal ones have a large twist. The former are used in three-leaf wardrobes, the latter in office furniture.
165 degrees. Carousel loops are distinguished by the complex shape of the bowl elbow. Relevant for corner bedside tables.
180 degrees. Used for mounting false panels and connecting the facade to the sidewall. A popular option for kitchen sets.
270 degrees. Suitable for any folding door.

The selection of suitable hinges is based on the design features of the products. The purpose of the interior items must be taken into account. Other factors also matter: the intensity of use, the material from which the furniture is made.

Basic dimensions of butterfly loops

Overhead butterfly hinges are considered economy-class products, and each manufacturer focuses on the general public when supplying them to the market. In this regard, according to international standards, such products are divided into 2 basic categories:

Hinge hangers designed for mounting doors weighing up to 30 kg - dimensions 100 x 75 x 2.5 mm.
If the weight of the door panel exceeds the specified values and reaches 40–50 kg, then for such structures it is recommended to purchase reinforced hangers with dimensions of 125 x 75 x 2.5 mm. These products are characterized by the presence of a larger number of holes and an expanded contact area, which significantly increases their load-bearing capacity.

Butterfly hinges with dimensions 125 x 75 x 2.5 mm

It should be noted that many companies resort to some simple tricks. If the consumer sees that hinges of the same brand have different dimensions, but at the same time, the same number of holes are marked on them, there is no need to overpay for a large size.

Basic designs

Due to the rapid development of technology, the requirements for the design and production of interior items have increased. Accordingly, the range of modern furniture hinges has expanded. Today, products are divided into cupless, overhead, semi-overlay, and four-joint groups. There are also models for attaching non-standard facades.

Cupless

The classic design consists of two thin plates connected to each other. There are holes along the edges for screwing in self-tapping screws; the opening angle is 90 degrees. Such furniture fittings are divided into several types:

Pianos. Mechanisms with one hinge act as hidden fasteners. They are used in cabinets, kitchen cabinets, poufs with a raised seat.
Heel. Hinges consisting of a pair of strips. The main disadvantage of the models is their low load-bearing capacity. Relevant only for light facades.
Card. The design is similar to their piano counterparts; the fasteners are fixed using holes located along the edges of the plates. There are various sizes of mechanisms. Scope of application: boxes, furniture in retro style.
Pin. In appearance they resemble card loops, but special pins are used for installation, which can vary in length. For light structures, products with 2-3 fasteners are selected, for heavy ones - with 4 or more.

The heel loop, like other cupless options, is rarely used in furniture production today. These are mainly decorative items that complement folding table tops. The designs have also found application in the installation of interior doors.

Overhead and semi-invoice

Overlays are products that are mounted without drilling. Suitable for thin facades that do not allow the installation of mortise hinges. This method of fastening has become widespread and is used in any type of furniture: living rooms, kitchens, bedrooms, as well as cabinets and chests of drawers. Opening angle - 110 degrees.

Half-overlay or middle loops cover the side of the case only halfway. They are installed in furniture if the facades are attached to a common partition and open in different directions. The angle is the same as for overhead ones - 110 degrees.

Installation of overhead and semi-overlay furniture hinges without insertion is relevant for non-standard facades. The main disadvantage of the models is the impossibility of adjusting the fit in different planes.

Quadruple joint

Universal hinges are durable and can withstand high loads. Suitable for furniture doors with opening angles from 92 to 175 degrees. The standard diameter is 35 mm, but other options are also available.

The four-hinged hinge consists of a bowl, a shoulder, and a mounting strip. Additionally, the models are equipped with decorative overlays. Smooth, silent closing of doors is ensured by closers. There are several types of such products:

Internal. It is used in cases where it is necessary to place the façade inside the body so that the hinges on the sashes do not come into contact with adjacent walls. There is a pronounced bend at the base.
Angular. Used to fix the facade at a certain angle. Due to the design features, hinges are installed without insertion. Standard models are designed for 30, 45, 90, 135 or 175 degrees.
Inverse. They consist of a pair of plates with holes, held together by a movable mechanism. Relevant for swing doors, they open 180 degrees.
Mezzanine. They are used to fix horizontal facades that open upward. Optimal for cabinets, including kitchen cabinets. The basis of the mechanism is represented by a spring.
Secretarial. The structure is similar to card furniture hinges; they consist of two flat elements fastened with a hinge. Used to fix horizontal doors that open downwards.
Adit. They are used to install facades on side posts adjacent to the walls. Relevant for attaching false panels.
Ombre. They provide 180 degree opening, so they are used to equip folding tables. Mounted on the ends of structures to fix hinged doors.
Pendulum. They are also called bar hinges; they got their name due to the opening angle of 180 degrees, similar to the doors in American bars.

A common name for four-hinge furniture hinges is frog. The moving part of the design, consisting of 4 hinges and a spring, looks like a bouncing amphibian. The models are characterized by significant advantages: reliability and versatility of use.

The bar hinge consists of a pair of cylindrical pins that connect 3 metal plates. Due to the springs, the door can be opened in any direction.

Types of overhead loops

Door hinges without a mortise have a similar design, but they differ fundamentally in purpose (street hinges, interior hinges, furniture hinges) and type of installation (corner hinges, card hinges).

By purpose

Depending on where, outdoors or indoors, the door is located, the hinges can be outdoor or indoor. This classification is not strict.

Each type has its own characteristics:

Street loops. Due to the fact that street doors, gates and gates are usually quite massive, overhead hinges for their installation are rarely used. In most cases, so-called arrow hinges are used, which can not only withstand the significant weight of the doors, but also perform a decorative function. In addition, arrow hinges are often installed on massive doors as safety nets, lightening the load for the main doors. Most often, arrow hinges can be found on antique-style gates and doors. Their shape can be standard or curly.
Arrow loops installed on gates

Interior hinges. When talking about interior doors, we also mean entrance doors, although much less frequently. As for interior doors, they are most often hung on non-mortise hinges. This is explained primarily by the fact that hinges for interior doors without mortise have an attractive appearance; secondly, by the fact that such hinges can be installed by a person without experience in such work, and thirdly, by the fact that some doors are plastic, the top layer of which cannot be cut off.
Standard overhead loop

Furniture hinges. Classic non-mortise type hinges are rarely used in furniture production. Most often - on retro-style furniture, as well as when repaired by home craftsmen. Furniture hinges, in turn, are card hinges, piano hinges, and secretarial hinges. Each has its own characteristics:
Piano hinges are also quite outdated, but they are still produced, which means they are in demand. They are card loops, very elongated in length. They can be found on the doors of antique furniture, on book-shaped tables, and also on the lids of pianos.
Secretory loops. They are similar in design to card cards, but usually have a rounded shape. Used for door leaves that open from top to bottom or bottom to top.
Non-mortise secretory loop

Hinges. They differ in the opening angle. The hinge hinge is often used where it is not possible to make an insert due to the small thickness of the wood (for example, small cabinets).
Furniture hinge without cup insert

By installation type

Depending on the type of installation, overhead hinges can be corner or card. Their features are as follows:

Card loops. These are classic hinges, consisting of two wings (cards) placed on a common hinge. Fasteners can be left, right or universal. The shape of card loops can be standard or curly. Among the figured loops, so-called butterfly loops are common, which are two cards, one cut from the other. When closing the door, one card is inserted into another. That is why this type does not require insertion during installation.
Corner hinges. They are a type of card loops. They differ from the classic design in that their cards are bent at an angle. Used on doors with a rebate. Usually such models require insertion, so we will not dwell on them.

Basic characteristics

45 degrees. Used for corner cabinets, trapezoid-shaped cabinets with one or two doors. This could be kitchen or wardrobe furniture.
90 degrees. Allows doors to be opened at right angles. There are several types of loops. Overlays do not require bending and are suitable for facades that completely cover the side walls. Semi-overlays have a medium twist, while internal ones have a large twist. The former are used in three-leaf wardrobes, the latter in office furniture.
165 degrees. Carousel loops are distinguished by the complex shape of the bowl elbow. Relevant for corner bedside tables.
180 degrees. Used for mounting false panels and connecting the facade to the sidewall. A popular option for kitchen sets.
270 degrees. Suitable for any folding door.

Types of furniture hinges by purpose

“Straight” hinges with an opening of 90-110 degrees

This includes standard furniture types, overhead, semi-overlay and internal types.

The invoice is also an external loop. Designed for installation of facades that completely cover the body from the sidewalls (not counting the technological gap of 2-3 mm for each door).

A half-overlay loop is used when the sidewall with fasteners is covered halfway. Typically used in three-door cabinets and double-opening wall cabinets.

Inset - also known as an internal loop. Used to install facades recessed relative to the body. But more often it is used for wall cabinets with a top opening, if the top lid hangs like a “visor”.

Adit, straight - it is also a loop for false panels. To install the facade not on the sidewall, but on a false panel located in the same plane as the facade. Mainly used in corner kitchen modules and on sink tables.

Corner hinges with standard opening 90-110 degrees

They are mainly used for corner facades located at 45 (135) degrees relative to the body, less often - for end modules - with an opening angle of 30, 60 degrees.

But in reality there are many more corner loops. But they are not in particular demand, since the need for them arises very rarely, in specific design projects.

Inverse hinges with increased opening angle up to 180 degrees

They also come in overhead, semi-overlay, inset, adit, and corner, but they provide a much larger opening angle, practically turning the façade 180 degrees. Needed to increase access to the interior of the cabinet when the standard 90-degree opening is not enough. Such loops are also called transformers, due to the complex design of the shoulder.

Carousel loop, aka crocodile

A specific type of hinge used for transformable doors that open like an accordion. Most often it can be found in sink tables, in combination with a direct inverse loop.

Almost all of the considered types of four-hinge furniture hinges are produced both in a standard version and are equipped with a closer - a special soft-closing mechanism. The closer can be built into the hinge arm or snap onto the bowl or arm.

Manufacturing materials and design

Card loops, bar loops and other types of fasteners are made from different materials. The most common are steel and brass. When choosing, you need to take into account their properties and features:

Steel. It has a shiny surface and an attractive appearance. Pros: high strength, affordable cost. Disadvantages: not suitable for the bathroom and other rooms with high humidity, rough ends, seams, have noticeable play, and after a couple of years they begin to creak.
Brass. Hinges are manufactured to exact dimensions, so each product can be used as a template for insertion. Pros: the material does not rust, does not need lubrication, the surface is perfectly smooth, carefully processed, minimal play, high-quality galvanic coating, noble color. Disadvantages: the cost is several times higher than steel models, the products wear off during long-term use.

A mortise or invoice hinge made of brass will be of better quality in all respects compared to its steel counterparts, but it will also be 5–7 times more expensive. When choosing, you should be guided by your budget and feasibility of use.

Steel

Brass

Awnings differ not only in materials of manufacture, but also in design. Beautiful products will perform practical and decorative functions. Forged hinges fit organically into modern, loft, Provence, and Baroque interiors. Antique decoration is relevant for vintage, country, retro, high-tech styles, it is also in harmony with minimalism, gold plating is with the classic direction, art deco.

What tools are needed to install overhead hinges?

To install overhead hinges on interior doors, a home craftsman will need the following set of simple tools:

A tape measure, a ruler with a steel blade, a carpenter's corner, a simple pencil - for marking the places where the hangers are installed.
An awl or sharp nail for preliminary marking of holes for self-tapping screws exactly in the right place.
A screwdriver with a set of bits for fixing hinges.
Slotted or Phillips screwdriver for manually tightening screws.

Screwdriver with a set of bits

All tools must be of high quality, sharpened, cleaned of dirt and ready for use.

Installation and opening angles

The MDM assortment includes hinges of the Slide-on 95 and Mini 12 series with various installation and opening angles. Together with special platforms for changing the angle, the MDM range allows you to develop a design of any, even the most non-standard configuration. The installation angle (installation angle) is the angle at which the door is in relation to the side of the cabinet in the closed position. The standard installation angle is 90°. For kitchen corner elements, hinges with installation angles of 30°, 45°, 120°, 135°, 180°, 270° (carousel hinge) are provided. The installation angle, as well as the overlay (overlay, inset or middle hinge), is determined by the type of hinge arm (see Ferrari article description). The opening angle (opening angle) is the angle at which the door opens from the closed position. For a standard hinge it is 110°; hinges with opening angles of 95°, 125°, 170° (carousel hinge) are also available. Hinges with non-standard installation and opening angles are used quite rarely, compared to standard straight hinges, and usually find their application in corner furniture elements. In cases where the hinges available in the MDM range are not suitable for creating a non-standard installation angle (for example, 10°), you can use platforms to change the installation angle. These pads are made of plastic and are placed under the mounting pads of the hinges when they are installed. In addition to plastic platforms with fixed angles for hinges of the Slide on series, there is a Compasso platform with dynamic angle changes in the range of 5°-22°.

Overhead hinges

It is believed that door hinges are unreliable and are only suitable for light interior walls. However, today the most advanced and reliable materials are used in their manufacture: steel alloys, brass, stainless steel, which expand the scope of their application. In order to achieve smooth opening of the blade, as well as to increase service life, the product can contain from two to four ball bearings.

The butterfly loop is treated with high-quality galvanic coating. Available in the following colors: bronze, copper, chrome, matte. After installation, they take on the appearance of ordinary hinges. But still, some serious professionals are wary of such innovations and prefer traditional overhead hinges with a door insert.