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81300Leveling button. You may have seen this feature on Look for machines with a leveling button on the general purpose foot. This is a tiny button (usually it’s black) on the presser foot. When pressed, it lifts the front of the presser foot up so that it can climb over the thickness change in fabric. This comes in handy when sewing through the multi-layer side seam or the multi-layer bottom seam in jeans. This is typically the area of sewing jeans that causes the most broken needles.
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81300At the heart of the chain stitch machine is its ability to produce a stitch that resembles a chain. This is achieved through a looping mechanism involving one or two needles and at least one looper. The needle threads penetrate the fabric, while the looper captures the thread to create the characteristic loop. This innovative approach allows for greater elasticity in the seam, making it ideal for materials that require flexibility, such as stretch fabrics.
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A double needle sewing machine is a specialized type of sewing machine that uses two needles and two threads simultaneously. This unique feature allows sewers to create two parallel rows of stitching, which can add depth and dimension to their work. Beyond simple straight stitching, this machine enables the creation of decoratively embroidered stitches, hems, and other details that can transform a basic garment into a tailored masterpiece.
Care and Maintenance
The Evolution and Functionality of Walking Needle Sewing Machines
typical double needle sewing machineFor those who love to get creative with their sewing projects, the Janome 7330 Magnolia Computerized Sewing Machine is a versatile and user-friendly option. With 30 built-in stitches, including decorative and heirloom stitches, this machine allows you to explore your creativity and experiment with different techniques and styles. And with special promotions on this popular model, there is no better time to unleash your imagination and take your sewing skills to the next level.
- Motor Power Opt for a machine with a strong motor, as it will make sewing through multiple layers of leather easier and more efficient.
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Moreover, handheld leather sewing machines are often provided with a range of built-in stitches, allowing for creative expression. From basic straight stitches to intricate decorative patterns, users can tailor their sewing to match their unique style. The ease of switching between different stitches prepares the ground for more personalized, artistic projects that truly reflect the maker's vision.
When it comes to sewing knits and stretch fabrics, a double needle significantly improves the overall look of the finished product
double needle

If you're on a tight budget, consider looking for a used sewing machine. Many people upgrade their machines and sell their old ones for a fraction of the price of a new machine. Just be sure to test the machine before purchasing to ensure it is in good working condition.
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- A car head gasket, often overlooked yet critically essential, is a fundamental component in the intricate machinery that powers modern vehicles. This seemingly insignificant piece plays a pivotal role in ensuring the efficient and safe operation of an internal combustion engine.
- Another advantage of metal cased oil seals is their ability to provide a secure and effective seal over a long period of time. The precise design and construction of these seals ensure a tight fit that prevents any leakage of oil or other fluids. This helps to maintain the efficiency and performance of the machinery or equipment in which the seals are installed.
Leather is probably the oldest of the lip materials still in common use, but the move towards mass production methods has seen a massive increase in the development of synthetic rubbers which lend themselves to accurate and repeatable injection and compression moulding. Nitrile (NBR) is still by far the most common elastomer for “normal” use, whilst Viton® (FKM/FPM) is rapidly replacing Polyacrylate (ACM) and Silicone (VMQ) for high-temperature applications. Viton® also has high resistance to abrasion and chemical attack making it a preferred elastomer. Recent developments in the use of PTFE for Rotary shaft seals has caused widespread interest particularly for high-speed shaft rotation or poor lubrication applications.
The functionality of oil seals in between machines cannot be emphasized. Apart from their primary function of preventing the entry and escape of elements that can damage the machines, they also help to elongate the machines’ lifespan.
Leading Oil Seal Companies: Innovations and Expertise


Above, are all the components of an oil seal and all its naming conventions. Beyond selecting the correct size, the three primary selection criteria are Material, Lip, and Case. If you have an oil seal you’d like custom designed and made, send us your specifications through our Oil Seal Design Form.
Acrylate natural rubber (ACM)

What are Oil Seals?
Most standard oil seals have to comply with the DIN 3760 and ISO 6194 standards. Different standard types of oil seals are available that comply with these requirements.
What are Oil Seals - Guide to what an Oil Seal is used for
To install an oil seal properly, the shaft must be undamaged. This is so the oil seal can do its job properly on the one hand, and to prevent it from being damaged during fitting on the other. In addition, it is very important to lubricate the shaft, the sealing lip and the bore with plenty of grease. This will allow the oil seal to slide more easily over the shaft and prevent dry running after the first rotation. The oil seal may also come into contact with the keyway, thread or other grooves when sliding over the shaft. By taping or covering the shaft at the location of these irregularities with oil-soaked paper, the oil seal can be mounted without damage to the sealing lip.