Installing additional appliances for the sewing machine often becomes a decisive factor in determining the quality of the final product. Walking foot It is not just an accessory, but a complex mechanism that synchronizes the movement of the upper and lower layers of tissue, preventing their displacement and deformation. Many craftsmen face difficulties in the first installation, since the design of the device requires accurate positioning relative to the needle driver.
Incorrect installation can lead to a needle breakage, tissue damage or even failure of the nodes of the sewing machine itself. It is important to understand that the principle of attachment can vary significantly depending on the model of your equipment and the type of tailing of the foot. In this article, we will discuss in detail the algorithm of actions that will help to avoid common errors and ensure the stable operation of the mechanism.
Before you start working, you need to make sure that the machine is off the network and the needle is raised to the upper position. This is a basic safety rule, ignoring which can lead to finger injuries or unintentional triggering of the mechanism. Next, you should prepare the workplace, providing a good overview of the installation area.
Structural features of the walking foot
The walking leg device is radically different from the standard clamping leg. The main feature is the presence of mobile “teeth” or levers that repeat the movement of the needle up and down. It is these elements that capture the upper layer of tissue and promote it in synchrony with the lower layer, which moves due to the serrated slat. Synchronization mechanism It is a key element that requires fine tuning during installation.
There are two main types of fastening of such legs: with the upper lever-drivers and without it. Driver models require a special bracket to be mounted on the needle holder, which makes the installation process more complex, but provides better synchronization. The legs without the top driver rely on friction and pressure, which is suitable for less slippery fabrics, but may not be enough for complex materials.
⚠️ Attention: Using a walking foot with an incorrectly installed driver can lead to a needle impact of the ol' parts of the mechanism, which is fraught with the failure of the needle driver.
When choosing a foot, you should also pay attention to the type of tail. The low tailing is suitable for most household machines, while the high tailing is used in industrial designs. The mismatch of the type of tailing will make the installation impossible or dangerous for operation.
Preparation of the sewing machine for installation
Before any manipulation of the machine mechanisms should be carried out thorough preparation. The first step is always to turn off the power supply. Even if the car is switched off with a button, the risk of accidentally pressing the pedal is preserved, so pull the cord from the socket.
Then you need to remove the standard clamping leg. To do this, raise the needle to the highest possible position, turning the flywheel on yourself. Lower the paw holder to release the mount, and carefully remove the paw. Be sure to also remove the needle if you plan to work in close proximity to the needle driver to avoid cuts.
- 🧹 Clean the area under the paw holder from dust and villi with a special brush.
- 🔍 Visually inspect the needle driver for lubrication or contamination.
- 🛠️ Prepare the necessary screwdriver (usually a small flat or cross) if your model requires a screw mount.
- 📜 Study the instructions for your particular walking foot model to identify unique requirements.
Cleanliness of the working unit is the key to long service equipment. The villi that gets inside the mechanism can disrupt the movement of the moving parts of the walking foot, which will lead to jerks of the fabric when sewing.
Instructions: installation of the foot with the top driver
Installation of the foot with the top driver is the most difficult option, requiring care. The main task here is to correctly position the driver's plug relative to the needle driver. The fork should cover the needle holder or a special screw, transferring vertical movement to the mechanism of the foot.
First, you need to loosen the screw of the needle driver attachment (if the design of your car suggests it) or just make sure that the driver's fork will not interfere with the needle's movement. Install the paw on the paw holder, fixing it with a screw, but do not tighten it completely. This will allow for the necessary adjustment.
☑️ Checking the foot installation
The key is to adjust the height. The driver's fork should move freely, without touching the body of the car, but at the same time fit tightly to the transmitting element. If the fork is set too high, it will not transmit movement, and the foot will not "step." If it is too low, there is a risk of breakdown.
⚠️ Warning: Before turning on the machine, be sure to scroll the flywheel manually to make sure that the needle does not touch any part of the installed foot.
After preliminary fixation, check the movement of the mechanism. Slowly rotate the flywheel and watch how the teeth of the foot lower and rise. They must move in sync with the needle: when the needle enters the tissue, the teeth press the material when the needle rises - the teeth move the tissue.
Installation of the foot without the top driver
Installation of legs that do not require connection to the needle driver is much easier and faster. These models are often called “forced-promoting paws” or simply walking paws with a passive mechanism. They are attached directly to the pad holder in the standard way.
You need to lower the paw holder, insert the tail of the paw into the groove and fix it with a screw. Make sure the foot is sitting tight and does not stagger from side to side. Luft can lead to uneven pressing of the tissue and, as a result, to the displacement of the layers.
A feature of such legs is reliance on the pressure of the clamping leg. Therefore, after installation, it is extremely important to properly configure the pressure regulator. To work with the walking foot, the pressure is usually increased to ensure a reliable grip on the upper layer of tissue.
If your machine has a removable paw holder, consider buying a walking paw that attaches directly to the needle holder, bypassing the standard paw holder - this often gives better stability.
Check the gap between the teeth of the foot and the needle plate. The teeth should not scratch the plate, but should pass close enough to effectively grasp the tissue. The clearance is adjusted by the screw on the leg body, if such a function is provided by the manufacturer.
Pressure adjustment and synchronization
Properly adjusting the pressure of the clamping paw is 50% success when using the walking mechanism. Too little pressure will cause the top layer of tissue to slip and synchronization will be disrupted. Excessive pressure can deform tissue or even damage the teeth of the reiki.
To adjust, find a pressure regulator, which is usually located at the top of the machine, above the needle holder. The numbers on the regulator indicate the pressure force: the larger the number, the stronger the press. First, set an average, for example, 3 or 4.
| tissue | Recommended pressure | Features of settings |
|---|---|---|
| Thin cotton, silk | 1-2 (weak) | Minimize the risk of delay |
| Average density, jeans. | 3-4 (medium) | Standard working hours |
| Tight coat, leather | 5-6 (strong) | It is necessary to promote heavy layers |
| Knitted cloth, knitted clothes | 2-3 (medium-weak) | It is important not to stretch the tissue with teeth |
Synchronization is checked on a test sample. Fold two pieces of fabric and stretch a few centimeters. If the top layer is going into folds or, conversely, lags behind, the driver’s position or pressure is necessary (fine tune). In some models, the driver's attachment screw on the needle holder can be shifted up or down for more accurate fit of the driving phases.
Perfect synchronization is achieved when the upper and lower transporters move the tissue at the same speed without creating tension on either side.
Typical errors and troubleshooting
Even experienced users sometimes make mistakes when installing additional equipment. One of the most common problems is knocking or rumble when the machine is running. This almost always indicates that the driver of the foot touches the body of the needle driver or other stationary parts.
Another common mistake is using a blunt or curved needle in combination with a walking foot. Since the gaps in the mechanism are minimal, the slightest deviation of the needle can lead to its breakage. Always use new, quality needles of the right size.
- 🚫 Problem: The tissue doesn't move. Solution: Check if the paw holder is lowered and if the driver is correctly installed.
- 🚫 Problem: The needle is breaking. Solution: Make sure the needle does not touch the edge of the hole in the foot and is inserted correctly.
- 🚫 Problem: Skipping stitches. Solution: Perhaps the foot is pressing too hard on the tissue, deforming it at the needle.
- 🚫 Problem: Noise at work. Solution: Lubricate the moving parts of the foot with machine oil drops (if permitted by the instructions).
If you hear a metal grinding, stop the car immediately. Continuing to work in this mode is guaranteed to cause serious damage. Remove the paw, check the integrity of all parts and repeat the installation, paying special attention to the gaps.
Safety and maintenance of the mechanism
A walking foot is a tool that requires careful treatment. After each use, it is recommended to wipe the mechanism with a soft dry cloth, removing dust and villi. The accumulation of debris between the teeth can disrupt their mobility.
Lubrication is rarely required, as most modern legs have self-lubricating sleeves or work "dry". However, if you notice that the mechanism has started to move tightly, one drop of special oil for sewing machines on the axis of the levers can solve the problem. The main thing is not to overdo it so that the oil does not get on the fabric when sewing.
⚠️ Warning: Never leave a car with a lowered leg out of work for a long time, especially if it is in a strained state. This can lead to deformation of the spring of the paw holder.
It is better to store the foot in the original case or box to protect the thin teeth from mechanical damage. Fallen on the hard floor of the foot can lose geometry, which will make it unsuitable for high-quality work.
Can I use a walking foot for embroidery?
Technically possible, but not recommended. Embroidery requires free movement of fabric in different directions, and the walking foot fixes the fabric, which limits maneuverability. It is better to use a foot for embroidery or remove the foot altogether.
FAQ: Frequently Asked Questions
Can I put a walking foot on any sewing machine?
Theoretically, there are universal models of legs that fit most low-tail machines. However, machines with built-in top transporters (such as some Bernina or Pfaff models) may require special adapters or paws specifically designed for this system. Always check compatibility before buying.
Do I need to change the needle when installing a walking foot?
Changing the needle to a special needle is not necessary, but it is recommended to use needles of good quality and the right size for your fabric. Since the walking foot is often used for complex and dense materials, make sure the needle is strong enough (like Jeans or Universal) and not blunted.
Why does a walking foot miss stitches on a thick fabric?
This can occur due to insufficient paw pressure or improper synchronization of the driver. Also check if there is too much gap between the teeth of the foot and the needle plate. Try to increase the pressure with the regulator and slow down the sewing speed.
How often should you lubricate the walking leg mechanism?
In most cases, the factory lubricant is enough for the entire service life. Lubricate the foot is only if you notice a clear difficulty in the movement of moving parts or the appearance of creaking. Use only special oils for sewing machines, avoiding thick lubricants.
Can I sew elastic fabrics without a walking foot?
Yes, you can, using a regular foot and laying a strip of paper or using a knitted foot. However, the walking foot greatly facilitates the process, preventing stretching and deformation of the knitwear, so it is highly desirable for regular work with such materials.