There are four main types of sewing machines: mechanical, electromechanical, electronic and computer.
Mechanical machines operate from the mechanical force of the user (hand or foot drive).
Electromechanical ones have an electric drive - an electric motor that drives the flywheel. The speed of operation depends on the degree of pressure on the foot pedal. The functions are controlled by switches on the machine body.
Electronic sewing machines have an electric drive and an electronic control panel. The built-in microprocessor controls the movement of the needle relative to the fabric. Using the electronic panel of the sewing machine, you can select the desired operation.
Computer machines can be connected to a computer. It is possible to download new embroidery patterns and stitch types, as well as program sewing operations.
Shuttle type
The shuttle can be of three types: swinging vertical, rotating horizontal and rotating vertical.
The swinging shuttle is usually used in non- expensive cars, it is installed vertically. At the same time, the maximum sewing speed is low, there are restrictions on the stitch width, and vibration is also observed during operation.
Rotary shuttles (double-running shuttles) provide quieter and smoother operation without vibration or skipped stitches. The shuttle can be installed vertically or horizontally.
When positioned horizontally, it is more convenient to thread the bobbins and you can start sewing without first raising the lower thread to the top.
The vertical arrangement of the double-running shuttle is used only in expensive household or industrial sewing machines. They are characterized by high reliability and durability.
Adjusting the presser foot pressure on the fabric
The ability to regulate the pressure of the presser foot on the fabric. The thicker the fabric, the less pressure is required. Also, a pressure regulator may be needed when sewing knitwear, since it stretches under the presser foot, and by reducing the pressure you can avoid this. If the machine has a built-in upper fabric feeder, a presser foot pressure regulator is not needed. Depending on the sewing machine model, adjustment can be done manually using a dial or automatically depending on the type of fabric.
Adjusting the sewing speed
Type of regulation of maximum sewing speed. As a rule, the sewing speed depends on the degree of pressure on the electric drive pedal, and the maximum speed can be set using a switch. The sewing speed can be adjusted smoothly or stepwise. With stepless adjustment, you can adjust the sewing parameters more precisely.
Speed limiter
A function that allows you to limit the maximum sewing speed using a switch installed on the sewing machine body. Despite the fact that all sewing machines allow you to regulate the speed by the degree of pressing force on the pedal, the presence of a limiter will make it easier to go through difficult areas, fixing a comfortable sewing speed and concentrating on working on the elements.
Maximum sewing speed
from 400 to 6000 sti/min
Depending on the model, the sewing machine performs from 600 to 1600 stitches in 1 minute without loss of sewing quality. Modern machines automatically adjust the force of puncture of the fabric, taking into account the type of needle, stitch speed and fabric thickness. It is important to remember that in addition to speed, stability and quality of the seam are also important.
Upper fabric conveyor
The presence of an upper fabric conveyor in addition to the lower one. It is used to pull the top and bottom layers of fabric through at the same time. This conveyor will be especially useful when working with thin and slippery fabrics. This results in an even stitch and no bunching. In addition, when performing work related to quilting, using the upper conveyor reduces the mutual displacement of layers of fabric.
Electronic puncture force stabilizer
Automatic adjustment of the force of tissue puncture with a needle. At any engine speed, the puncture force remains maximum. Using an electronic stabilizer, you can comfortably work with fabrics of any thickness.
Disabling the Fabric Feeder
Possibility to turn off the fabric conveyor. This function may be necessary when performing certain operations (hand embroidery, sewing on buttons), when it is easier to move the fabric manually.
Sewing in multiple directions
Possibility of automatic movement of fabric in all directions. Typically, sewing machines can produce stitches up to 8-9mm wide. With the ability to sew in multiple directions, wider stitches can be achieved. Such models are usually considered as machines with embroidery capabilities.
Sewing without pedal
A function that allows you to sew without using a pedal - to start sewing, you need to press a special button on the body, and to stop the machine, press it again.
Reverse button
Has a reverse stitch button. When the machine is operating in this mode, sewing is performed in the reverse direction. As a rule, this is done to secure the stitching. In more expensive machines, this function is performed using the “automatic stitching” mode.
Automatic stitching
The presence of an automatic stitching function, when the thread is automatically secured at the beginning and/or end of the stitch. Also, fastening can be done using the reverse mode, when stitching is performed at a short distance in the opposite direction.
Knee presser foot lift lever
The presence of a special lever for lifting the presser foot to the upper position, which is convenient to press with your knee.
Automatic presser foot lift
Possibility of automatic lifting of the presser foot. At the end of the sewing operation, the presser foot automatically raises. This function can be disabled and used to lift the presser foot using a hand or knee lever.
Max. presser foot lift height
from 5 to 16 mm
The distance between the working surface and the presser foot in the upper position. The thicker the fabric, the greater the height required.
Lighting
The sewing machine has a built-in halogen or incandescent lamp to illuminate the working surface.
Lamp power
from 5 to 15 W
To illuminate the working surface, sewing machines are equipped with a built-in incandescent or halogen lamp. Depending on its power, the intensity of illumination and, accordingly, the convenience of operation depend. When choosing this option, it is worth considering that it is unacceptable to use a light bulb with a higher power than stated in the specifications sewing machine.
Button size measurement system
The presence of a device that measures the size of buttons (loop size).
Power consumption
from 35 to 550
Depending on the model, the sewing machine consumes from 0 to 105 W. A low value indicates the efficiency of the device.
Connecting to a computer
It is possible to connect an electronic sewing machine to a computer. This allows you to download to your device new type stitches or embroidery patterns, program sewing operations at your own discretion. Direct connection is provided via a cord via a USB port. Loading via USB flash is also possible.
Sewing operations
Number of sewing operations
from 1 to 3024
The number of types of stitches that a sewing machine can make.
Making a loop
There are three sewing loop processing modes: automatic, semi-automatic and manual.
With an automatic buttonhole, the machine sews the buttonhole itself in one step. It also automatically makes the necessary switches and overcasts all edges of the buttonhole. The buttonhole dimensions are set using a special buttonhole foot or by the user in millimeters. This is convenient when making several identical loops on one product.
The semi-automatic loop is performed by the user independently, when he alternately switches the necessary operations (lower, left, upper and right edges of the loop). There is no need to move the fabric manually. In this case, more time is spent processing each loop.
In manual mode, the user performs the buttonhole independently. You need to manually move the fabric and measure the distances between the edges of the loop.
Number of loops
from 1 to 20
The parameter indicates the number of types of buttonholes that the sewing machine is capable of making.
Typical for models with automatic loop execution (see "Loop making").
Ruler on the body
Some models of sewing machines are equipped with such a useful addition as a ruler on the body. Its use will allow you to easily control the stitching of parallel elements and other dimensions without the use of additional rulers and devices.
Maxi patterns
Computer sewing machines may have an additional mechanism that allows you to move the fabric not only back and forth, but also left and right. This provides additional embroidery capabilities - you can embroider a flower, make several stitches diagonally, embroider a small geometric pattern, and so on. Maintaining this function is called maxi-patterns.
Max. stitch length
from 2.5 to 12 mm
The parameter indicates the maximum possible distance between two longitudinal needle punctures.
The shorter the stitch is made, the stronger the overall seam. The required stitch length depends on the purpose of the seam. The maximum indicator primarily determines how thick fabrics can be sewn on a machine. The parameter also plays an important role, for example, when embroidering.
Max. stitch width
from 3 to 36.5 mm
The maximum possible distance between stitches, which determines the width of the entire seam.
Decorative and overcast zigzag stitches are usually made wide.
Number of types of monograms
from 1 to 30
Depending on the model of the sewing machine, the number of monograms varies from 1 to 30. Monograms are typical for artistic embroidery, they are applied thanks to the presence of built-in special programs that ensure the connection of letters into an ornamental inscription.
Number of embroidery alphabets
from 1 to 28
Depending on the model of the sewing machine, the number of alphabets varies from 1 to 17. Cyrillic and Latin embroidery alphabets with several types of fonts and hieroglyphs are available. The standard set of alphabets built into the program is 2-4. If it is possible to connect directly to a computer, any number of sewing programs with patterns and fonts can be loaded into the device.
Number of embroidery motifs
from 21 to 930
Depending on the model of the sewing machine, the number of motifs varies from 21 to 480. Any sample photograph or drawing can serve as an embroidery motif.
Stitches
Overlock
Possibility of making seams that imitate overlock stitches. Overlockers can simultaneously stitch, trim and finish the edge of the fabric. The presence of overlock stitches may be necessary when processing the edges of loose fabrics.
Overedge
The sewing machine allows you to make seams that imitate overcasting. Only overlockers can cut, stitch and process the edges of fabric at the same time. Sewing machines are deprived of such an opportunity, however, imitation of overlock seams makes it possible to work with loose fabrics.
Secret
Possibility of performing a hidden stitch. It can be performed in one or two types. Blind seams are used, as a rule, when hemming the bottom of a garment and are invisible from the front side.
Elastic
Possibility of sewing elastic stitches with a sewing machine. Such seams are usually used when working with knitted fabrics.
Elastic concealed
Possibility of making elastic blind seams. As a rule, this stitch is used for hemming knitwear.
Design
Embroidery block
The presence of an embroidery unit in the kit, which is installed on the sewing machine. A hoop with stretched fabric is attached to this device. Embroideries can be of varying complexity and sizes. Depending on the machine model, embroidery units can produce only simple designs and inscriptions, or have the ability to connect to a computer and load new embroidery patterns from floppy disks or memory cards.
Display
The presence of a display on the body of the sewing machine. It usually displays the selected operations, stitch type, embroidery pattern and other information. Some car models have a touch screen.
Display type
The presence of a display on the body of the sewing machine will allow you to view the selected operations, the type of stitch, the embroidery pattern and other information. More expensive models are equipped with color displays, but for most functions a black and white display will be sufficient.
Sewing Advisor
Many computer-controlled sewing machines are equipped with a sewing assistance and hint system - a sewing advisor. Depending on the class of machine, the advisor can suggest which settings are recommended for a particular type of fabric and which foot and needle should be used to perform a certain sewing operation. They can also monitor the correctness of the sewing process, and even tell you in detail, with pictures or short clips, how to perform the required sewing operation.
Sleeve platform
Possibility to remove part of the work table. This allows you to comfortably work with narrow products (pants legs, cuffs, sleeves).
Platform length
from 14.5 to 33 cm
The length of the platform characterizes the distance from the needle to the side of the machine body, located to the right of the seamstress. You should pay attention to this indicator if you plan to sew bulky items, such as blankets or winter coats, since the longer the platform, the easier and more convenient it will be to manage large items.
Sleeve platform length
from 7.5 to 200 cm
The sleeve platform is a narrow part of the sewing machine that allows you to process product sleeves. The length of the sleeve platform varies between 7-20 cm, and depends on the overall dimensions of the sewing machine.
Table to expand the work surface
The set includes an additional table, with which you can expand the work surface. This may be necessary when sewing large items (curtains, bed sheets, bedspreads).
Needle threader
The presence of a device that threads the upper thread into the needle.
Automatic bobbin threading
Availability of a device for automatic threading of the lower thread. As a rule, it is used in horizontal shuttles. With this device you can start sewing without first pulling the bottom thread up.
Automatic thread cutter
When you press the thread cutter button, a special mechanism cuts the lower and upper threads. The needle is in the upper position.
Automatic needle stop in the upper position
At the end of the stitching, the needle automatically moves to the top position.
Needle position switch (up/down)
The ability to switch the needle to both the upper and lower positions after finishing the stitch.
Coil location
The mount for installing a spool of thread is usually located vertically on the top surface of the sewing machine. Horizontal installation of the spool is less common; this position promotes smooth and uniform unwinding of the thread and provides a more even stitch.
Accessory compartment
The presence of a compartment in the machine body for storing accessories.
Case
The case is intended for protective purposes. This can be a soft fabric cover or a hard frame one, which also prevents the machine from mechanical damage.
Paws
For quilting
A quilting foot is typically used to sew together multiple layers of fabric, often using fillers (such as padding polyester).
For sewing in a zipper
When using this foot, you can sew a parallel stitch as close to the zipper as possible.
For sewing on buttons
The foot for sewing on buttons is necessarily equipped with two straps for increased stability. Some models have rubberized linings that prevent the fabric from slipping. Additionally, it can be equipped with a removable pin to form a “leg”.
These feet can also be used to sew on buttonholes, buttons and hooks.
Overlock
This foot is used when performing overlock stitching. Thanks to the special design of the overlock foot, the fabric is not pulled together when sewing a seam.
Overedge
There is a foot available that is designed for overcasting. Thanks to the overcasting foot, the fabric does not pull together when sewing a seam.
For hemming
Hemming feet are used to finish the edges of thin fabrics. The presence of a guide channel on the underside of the foot ensures an even hem seam.
Dimensions and weight
Width
from 9 to 64 cm
The width of the sewing machine in centimeters. When choosing this option, it is worth considering that manufacturers, as a rule, indicate the overall dimensions of the device without taking into account the protruding parts of the case.
Depth
from 8 to 44 cm
Sewing machine depth in centimeters. When choosing this option, it is worth considering that manufacturers, as a rule, indicate the overall dimensions of the device without taking into account the protruding parts of the case.
Height
from 16 to 56 cm
Height of the sewing machine in centimeters. When choosing this option, it is worth considering that manufacturers, as a rule, indicate the overall dimensions of the device without taking into account the protruding parts of the case.
Weight
from 0.4 to 50 kg
Sewing machine weight in kilograms. Depending on functionality and power, it can range from 2 to 15 kg.
Presser foot location
Loosen screw A. Make the adjustment by moving the presser foot to the left or right and make sure that the needle lands directly in the center of the needle hole on the presser foot.
Presser foot lift
10 stitch pattern
10-1 Position of needle thread guides
There should be a distance of approximately 17.5mm from the center of the needle thread guide hole to the setscrew (see figure). To adjust the height of the thread guides, loosen screws A and move each guide up or down (see the distance in the illustration). If the stitch pattern cannot be changed much by adjusting the thread guide height due to the thread being used, unwind the thread after trial sewing and adjust the thread guide height while checking the needle thread tension.
10-2 Position of the thread guide on the needle thread take-up
When the needle bar is in the upper running position, the needle thread take-up bracket A should be positioned horizontally, and there should be a distance of 75mm from the middle of the shaft to the guide thread on the needle thread take-up B. To adjust, loosen screws C and D. To tighten the needle thread, move the thread take-up to Y. To loosen the needle thread, move the thread take-up to X.
10-3 Synchronizing the needle thread take-up
The movement of the needle thread take-up relative to the up and down movement of the needles can be adjusted. Synchronization regarding the movement of the needle bar up and down is set at the factory. 
10-4 Needle thread guard position
When the needle bar is in the lower running position, the center of the thread guide hole A should be parallel to the upper surface of the needle thread guard B. In addition, A should be parallel to B. To adjust the height of needle thread guard B, loosen screw C and move the needle thread guard up or down. To tighten the needle thread, lift B up. To loosen the needle thread, lower B down.
For cotton threads (non-stretch threads)
For wool threads (stretch threads)
10-5 Position of the thread take-up thread guide
With the needle bar in the up travel position, thread any of the parts A, B or C on the thread take-up of the spreader.
For wool threads: thread B or C.
For cotton or fiber threads: thread A and adjust the thread take-up screws D
10-6 Looper thread take-up thread guide position
The eyes on thread guides B and C should be aligned with the X mark on thread guide A. To increase the amount of looper thread fed by the looper thread take-up, loosen the thread guide screws B and C and move the thread guides forward. To decrease the quantity, move the thread guides back. Adjust according to the thread used and stitch length. For wool threads: move thread guides B and C forward. Do not thread the tension disk.
10-7 Looper thread take-up position
The thread guide D should be in the middle of the thread take-up groove A of the looper. When the point of the left needle is 0.5-1mm above the bottom surface of the looper plate and the looper moves from the extreme left position, the looper thread should be removed from position C on the looper thread take-up. To adjust, loosen screw B and adjust the looper thread take-up. To adjust the height of thread guide D, loosen screw E and align the bottom of the hole of thread guide D with the top surface of the staple.
11 gum feed
11-1 Inserting tape/elastic
To insert the ribbon/elastic correctly, see the illustration. The rollers open by pressing the rubber adjustment knob A.
Loosen screw A. Adjust the position of the band guide according to the needle distance and/or band width. Adjust the position of guide B of the upper knife according to the width of the hem cut by the knife. Install the upper knife guide B by tightening screw C while making sure that the upper knife guide B does not contact the knife.
11-3 Adjusting the front of the presser foot
Adjust the front of the presser foot to suit the type of fabric and/or elastic you are using. To sew heavy elastic onto fabric, lift the front of the presser foot. This reduces resistance and the elastic feeds evenly. Loosen nut D and turn screw E in the desired direction.
11-4 Installing the guide strip
Set the tape guide shaft A as close to the needle as possible, but the machine should sew the fabric straight. To adjust the band guide, loosen screw B and turn eccentric collar C clockwise or counterclockwise. The eccentric collar works as a stopper, so install the eccentric collar correctly so that it does not contact the needle holder and spreader thread guide, etc.
11-5 Quantity of supplied braid/elastic
To adjust the amount of tape/elastic fed, loosen wing nut A and turn adjustment screw C while checking the markings on handle B. To increase the amount, turn screw C clockwise. To decrease the quantity, turn screw C counterclockwise. Adjustment range from 0.9 - 2.3mm. Adjust depending on the fabric and elastic used. At the same time, adjust the pressure of the small elastic feed roller (see 11-6). To increase the quantity slightly, loosen the two eccentric set screws from hole D. Turn the flywheel all the way with a wrench until it stops. Then tighten the set screws. In this case, the range will increase from 1.4 to 3.6mm.
11-6 Pressure of small elastic feed roller
To adjust the pressure of small roller A, loosen adjusting nut B as necessary. To increase pressure, turn clockwise. To reduce pressure, turn counterclockwise. Adjust the pressure based on the rubber band you are using. 
11-7 Checking the operation of the gum feeder
If the elastic feeder does not work well, the elastic will feed unevenly, and various problems may occur: elastic burning, elastic shrinkage, needle breakage, uneven seam. Check the following:
Adjust small roller A so that it rotates freely. Otherwise, the braid will not feed evenly.
The roller axis and its shaft must rotate smoothly.
The small roller's spring pressure should be minimal, but sufficient to follow the speed of the roller.
11-8 Lubrication of parts
The coupling is lubricated at the factory. Add lubricants before starting work. Rotate the handwheel to align mark A on the housing with mark B on the handle. Remove screw C from the hole and add lubricant. Remove screw D and lubricate the bearing.
12 front knife device
12-1
Adjusting and lubricating the lower knife holder
Loosen screw A to change the position of the lower knife holder. The lower and upper knife holders can be adjusted by moving them left or right at the same time. When changing the distance from the right needle to the edge of the fabric, adjust the position of the lower knife holder.
12-2 Replacing the lower knife
12-3 Replacing the upper knife
Set the gap at the top and bottom between the upper and lower blades (see 12-2 1).
Loosen screw F and remove upper blade G.
Install a new blade and check the cutting quality (see 12-2 6).
When the upper knife is in the down position, the upper and lower knives should cross approximately 0.5mm. To adjust, loosen screw A on the upper knife shaft handle. After this, the upper knife and the upper knife holder can be moved up or down at the same time. Tighten screw A when the upper and lower knives intersect 0.5mm. Fasten the sleeve D to the handle B of the upper knife shaft and spacer C, so that the upper knife shaft E does not move either to the right or to the left. Tighten screw A.
12-5 Sharpening knives
The upper knife is made of a very hard alloy. When knives become dull, sharpen the bottom knife first (see picture). If the trim remains poor, replace the upper blade.
13 replacing the synchronizing belt
13-1 Markings on timing belts
For the X series, there are three types of synchronizing belts A, B and C, according to the distance between the upper and lower shafts. [A] indicates the longest timing belt.
13-2 How to remove the timing belt
Loosen the eight set screws on the housing cover and the four set screws on the oil reservoir (see illustration). Remove every part.
Loosen the two screws A. Slowly turn the flywheel to the right to remove it (see illustration).
Remove the pulley, plates and bearing in the order shown in the figure below. Then pull the timing belt out of the bearing hole.
13-3 Installing the timing belt
14 cleaning the car
At the end of the day, remove the needle plate, then clean the needle plate grooves and the area around the feed dogs.
The semi-automatic loop is performed in four steps. You will have to turn the stitch selection dial four times:
- Setting;
- Left side of the loop;
- Setting;
- Right side of the loop.
The automatic loop is completed in just one step. The size of the buttonhole itself is automatically determined by the size of the button that is placed in the foot to make the automatic buttonhole.
You probably already know the basic rule regarding sewing needles: Replace with a new one after every large sewing project. Even a slightly dull tip or damaged needle eye can seriously affect the sewing result. Indeed, on modern sewing machines, the needle pierces your fabric at a speed of 600 to 1,000 stitches per minute. But at the same time it is also important to choose suitable type needles.
If you look at the needles offered in the most ordinary sewing store, you can see at least a dozen different varieties. In appearance they are all similar, unless you look at them with a magnifying glass. But different types needles have different needle eyes, different points, different rods, etc. All these parameters are of great importance for the work.
Let's look at the main types of needles in accordance with the attached illustration:
1. Universal/standard
Features: slightly rounded tip, standard for sewing machines.
Materials: silk, rayon, cambric, chiffon, organza, linen, georgette, poplin, ribbed corduroy.
2. Jersey
Materials: thin knitted and knitted products, single (one-sided) jersey, corset fabric, jersey.
3. Stretch
Features: Medium rounded tip.
Materials: highly elastic knitwear, simplex, latex, lycra.
4. Jeans/denim
Features: sharp tip.
Materials: denim, canvas, twill, artificial leather.
5. Microtex
Features: thin shaft and very sharp tip.
Materials: microfiber, fine and tightly woven material, such as silk, taffeta, etc.
6. Leather
Features: The tip is blade-shaped and cuts through material.
Materials: suede, pigskin, calfskin, goatskin leather.
In addition, it is important to consider the manufacturer of the needle. We express our gratitude to the Japanese company Organ Needles, which helped us prepare a large material on needles for sewing machines.
Flash card requirements:
The flash card with designs must be formatted. The optimal size of a flash card is up to 4 GB. It should not contain any extraneous files: documents, photographs, films, music.
Create a folder for the design:
You insert the formatted flash card into the turned off machine. Then turn it on and wait for the download process. The machine creates a folder on the EmbF5 card (the name may vary slightly). Also, in some cases, depending on the class of the machine, a MyDesign folder can be created. After that, take out the card.
Transferring the design:
You transfer the design to the card either by simple copying or using special software (Digitizer MBX). The design must match the size of the hoop you are embroidering on. If it extends beyond the hoop, the machine will not open it. In this case, the design should be divided into several individual ones using special software.
The first digit on the left is the last digit of the year of manufacture. For example, if your sewing machine was manufactured in 2007, then the first digit will be 7. And if in 2014, then the last digit will be 4.
The second number from the left is the quarter in which the model was produced. 1 - production month from January to March, 2 - from April to June, 3 - from July to September, 4 - from October to December.
Other figures refer to the manufacturer's general information.
For example, serial number 431092594. The model was produced in the third quarter of 2014.
To perform a double stitch, you will need a double needle (two needles on one holder). If your sewing machine produces a zigzag width of 9 mm, then the distance between the needles can reach up to 9 mm. For machines with a zigzag width of 5 or 7 mm, the distance between the needles should not exceed 5 or 7 mm, respectively.
A sewing machine has two spool pins that hold spools of thread. The rods can be vertical or one horizontal and the other vertical (the rod is included additionally in the package).
Install two spools, thread the threads symmetrically behind the thread guide, then into the double needle. Select the straight stitch sewing function and use the standard zigzag foot.
A double stitch is formed on the front side of the fabric, and a zigzag stitch is formed on the back side. To process knitted fabric, we recommend using double stretch needles 130/705N No. 75/4.
Our company recommends that scheduled maintenance of Janome sewing machines and overlockers be carried out in specialized centers. If you want to do this yourself, please use only high quality lubricants designed specifically for sewing equipment.
Buyers are often faced with the fact that the cars they purchase are missing certain accessories. We would like to inform you that the following models may be supplied without a hard case:
- Janome 7518A
- Janome 7524A
- Janome 7524E
- Janome DC50
- Janome DC4030
- Janome Memory Craft 5200
Be sure to check the equipment of the sewing machine before purchasing from the seller. A sign that a hard case is missing is a low price. Hard car cover not sold separately.
Almost every beginner, when choosing a household sewing machine, includes a request tosewed the most different fabrics: from chiffon to thick cotton, and also easily copes with knitwear and elastic materials. Everyone wants to choose a high-quality and versatile model. Is this real?
On a note!! If the machine copes with its tasks perfectly and produces high-quality stitching, there is no need to adjust anything out of curiosity. But if you are trying to work with different densities of materials, sewing knitwear, and the stitching turns out to be defective, then adjusting the pressure may be a way out of the situation. But you should not set super-tasks for your technology that it cannot accomplish under any circumstances.
The force with which the foot presses the material against the conveyor is called “foot pressure”. Why is it important? Because without uniform feeding and optimal pressure, you cannot get a high-quality stitch. By adjusting the pressure level of the presser foot, you can achieve optimal sewing results. different materials.
Patterns:
1. The higher the feed teeth are located above the needle plate, the moreThere should be foot pressure. To ensure uniform feeding.
2. When sewing thin materials, the pressure should be reduced, and for dense materials - increased.But to get the right result, select it empirically.
Adjustment methods:
1. Using a manual adjuster - this can be a disk or a screw.
2. Using electronic sewing machines.
More details about the adjustment method can be found in the instructions for your machine model. For those who are just looking for a household sewing machine, we recommend paying attention to models with the ability to easily adjust the pressure. Very convenient and easy to use, implemented in computer sewing machines.
The movement of the processed materials occurs due to the movement of the teeth located in the lower plate and the pressure of the foot. The initial setting of the sewing machine at the manufacturer is carried out to work with frequently used medium-weight fabrics: linen, cotton, gabardine.
Needlewomen are not limited to sewing products from such materials, especially since modern units can work with fabrics of different densities. For example, when sewing seams on thin fabric, it is undesirable for the presser foot to be too strong, otherwise puffs may appear on the fabric. Knitted materials are stretchable, so excess pressure will cause elongation in the seam area.
When working with high-density fabrics - canvas, it is necessary, on the contrary, to increase the pressure so that sufficient friction force arises to facilitate the normal movement of the parts being sewn.
Why is it important to adjust the presser foot pressure?
Every dressmaker should understand that a sewing machine is a mechanism that needs to be adjusted in order for the work done to look neat. Installed paws are made of different materials: metal, plastic, Teflon. They will slide across the fabric in different ways, so the pressure must be adjusted to ensure uniform movement of the parts being sewn. This determines how uniform the stitches will be.
If in mechanical models the presser foot pressure was adjusted manually by the seamstress, then in modern models a regulator is already provided on the body. An experienced dressmaker first adjusts the equipment, conducts trial operations on an unnecessary piece of fabric, and then gets to work.
How to reduce foot pressure on mechanical sewing machines?
Old-style devices consisted only of metal parts: components, parts, housing. Therefore, in order to increase or decrease the force with which the foot presses on the fabric, it was necessary to rotate the screw located on the rod. Due to this, adjustment occurred: compression or stretching of the spring, which exerts pressure.
Finding the rod is easy. In older models of the Podolskaya type, it comes out into a hole located in the upper part of the body. In units with an electric drive, you need to remove the top cover, under it in the sleeve all the main components are located.
Adjusting presser foot pressure in modern machines
Electromechanical devices are designed a little differently. You don't have to find the core of the foot. Many models have a regulator that makes it easy to adjust the pressure of the presser on the fabric. It is located on the machine body or under the front panel cover. How to configure is described in the instructions.
In computerized models, such a regulator is usually absent, since the device itself configures the necessary modes based on the installed program.
Therefore, when deciding whether you need to adjust the presser foot pressure in the machine before sewing, study the principles of operation of the device and read the instructions carefully.
