Updated at: 20-06-2022 - By: Sienna Lewis

When technology was employed to construct the sewing machine, it was supposed to make sewing easier, faster, and more efficient. To keep your sewing habit on track, it’s a good idea to become familiar with how machines work.

How do you sew using a machine? work? The sewing machine has two modes of operation. To get started, you only need to plug the machine into a wall outlet; then choose your stitch pattern and begin knitting. Treadle or handwheel movement of the needle on an automatic sewing machine is another option. Your stitching will be a lot more fun, no matter what you decide.

How Does A Sewing Machine Work: Stitches

Stitches in Hand Sewing

Making a clothing via hand stitching is an option. There is only one thread that we use. Both the front and backsides of the fabric are included. The needle helps the thread go through the material from the front to the backside. It repeats the same process from the backside to the frontside.

When you look at the cloth, it looks like the needle is always moving from one side to the other. In knitting circles, this is known as the “Runny Stitch”.

Stitches in Machine Sewing

Two threads are utilized in machine stitching. The cloth has two sides: the top and bottom..

Basic Parts of Sewing Machine


The entire machine is moved by the pully mechanism. You can see how it works by looking at the crankshaft. It can either be powered by an electric motor or manually operated by pulling on the handle attached to it. A foot peddle can also be used to move the pulley.

Upper Crankshaft

A pulley connects the upper crankshaft to the crankshaft on the other side. The shaft is attached to the other end. It is connected to the shaft at the bottom by a vertical shaft.

Pulley action is converted into needle motion by a rotary crankshaft that is attached to the higher crankshaft. As a result, the lower crankshaft moves Dog Feed and the Shuttle case.

Bottom Crankshaft

On one end, it has an inclination shaft that connects to the crankshaft. The second is connected to both dog food and the shuttle. The lower crankshaft provides movement for both the dog feeder and the shuttle.


Basically, it’s a bobbin with thread inside, and the thread is attached to the bobbin. Hooks and a casing are also included, and the bottom end of the shaft is linked to one of the two ends of the hooks. Just below the dog food is where you’ll find it, along with the needle.

Dog Feed

The bottom of the shuttle casing is where it is joined to the shaft. The cloth can move in a consistent manner thanks to this. This ensures that all of the stitches are the same length and width.

Beyond these basic components, a wide range of extras contribute to the machine’s flawless operation. Among these are a tool for adjusting the thread tension and an attachment for adjusting the needle movement speed to produce the desired stitch size, for example.

Motions of Sewing Machine

All of these components are interrelated, as we discovered. The next step is to look at the various motions that these parts do.

Up Down Movement of Needle

The crank on the upper shaft converts the circular motion generated by the pulley to movement on the needle in upward and downward directions.

Shuttle Motion

Shuttle motion is aided by the shaft at the bottom of the hull. It’s a half-circular motion.

Dog Feed Motion

Moving back and forth is what it’s all about. Fabric is moved forward by this force.

Why Does A Sewing Machine Have Two Threads?

Two threads are needed for a sewing machine since the needle’s job is to pierce the fabric, allow one thread flow through, and then tie a knot with the other. Rather than sewing by hand and driving the needle through the fabric, a sewing machine uses this method to generate its stitching. Using a hook on the shuttle, the bottom thread is pulled from a bobbin housed inside the rotating casing.

How does a sewing machine make stitches using two threads

  1. Using the needle from the top of the fabric, the thread is threaded down through the fabric and into the needle.
  2. So, the shuttle starts spinning, and its hook is positioned to grab the needle’s thread.
  3. The hook of the shuttle will pass through a loop left by the needle on the top of the thread.
  4. The shuttle hook secures itself around the bobbin’s thread, which is then dragged by the hook.
  5. The upper thread is tightened by sliding the needle higher and removing it from the hook.

How do Sewing Machine Bobbins Work

Before you can grasp how a bobbin works, you must first understand what a bobbin is. When sewing, a bobbin provides you with the thread to utilize on the bottom of the needle. The thread color on your bobbin doesn’t have to match the thread color on your spool, but you can change the color to achieve a certain look or hide the thread altogether.

For one thing, the bobbin can be constructed from a variety of materials. For example, stainless steel, other metals, or plastics can be used to make it. An ordinary measurement. Before you can comprehend how a bobbin works, you need to know what one is. The under-thread for stitching is provided by a bobbin. It’s possible to use the same color thread on your bobbin as on your spool, or you can change the color to achieve a certain effect or to hide the thread.

A quarter-inch to a half-inch diameter is possible depending on the model of your machine and the age of it. The ready-to-use bobbins already have a thread wound around the spool.

It is necessary to thread a little thread around the bobbin before attaching it to the bobbin winder. Place the bobbin on top of the winder and secure the stopper in the thread’s path.

Before beginning to sew, make sure the thread is wound around the bobbin numerous times. Then you’ll be able to sew whenever and wherever your heart desires. Put your bobbin in an under-bobbin holder and remove the thread by pulling it out a few inches at a time. After that, you’ll be able to sew with ease.

The Inner Works of a Sewing Machine

The cover conceals many of the features that make the most recent sewing machines work. There are many pieces, pulleys and belts, and cranks buried behind and out of view when you remove the cover.

An electric motor drives a drive belt for each of these components. To move the upper, a drive belt moves a wheel that in turn turns a shaft. As a result, several mechanical components attached to the higher drive shat spin. Many of the secrets of modern sewing machines are hidden behind the cover. A closer inspection reveals a complex network of pulleys, gears, and chains that are hidden from view.

The crank is one of the most active parts. In order to complete your stitching as quickly as possible, you’ll need to use this machine. All mechanical components attached to it are moved by a belt that links both of the driveshafts, both lower and upper.

Both the shuttle and the needle can move together since the two drive shafts are linked.

What Is The Purpose Of Bobbin?

At its core, it serves to keep the thread in place, much to cylinders used to keep yarn in place while weaving. Contrary to popular belief, the thread used for basting and embroidery is not the same as the bobbin thread. The following components make up the bobbin on the machine:

Bobbin case

Unraveling the thread is made easier with the help of a bobbin case.

Bobbin tension system

It’s also possible to tweak the bobbin’s tensioning mechanism.

Bobbin winding system

The Bobbin Finding System is responsible for ensuring a smooth thread transfer to the bobbin.

Can A Sewing Machine Work Without A Bobbin?

In order to use a sewing machine, you must have both the needle and bobbin in order to complete a stitch. Some machines only use needle thread, thus there are some exceptions. Without the bobbin, sewing lock stitches can be a challenging process.

How do you sew without a Bobbin?

If you’re not using a sewing machine, you can sew without a bobbin by using something else. Overlockers, sergers, and chain sewing machines are a few examples. If you don’t have the Bobbin, using an embroidery machine may be tough.


Basically, the sewing machine is a machine that sews. Models available on the market may have slight differences.

With any luck, you now have a better understanding of how sewing machines work and will be more equipped to sew your innovative creations on a variety of lovely materials!