How to Thread a Singer | 4423 Heavy Duty Sewing Machine

Brother Sewing Machine Cs6000i Bobbin Case Problems

For threading a sewing machine, it is necessary to traverse it and join two threads: one of the bobbin (below) as well as the spool (above). Also, you must thread the spool if it’s empty.

Threading a sewing machine can therefore be summed up in four main steps:

  1. Fill the bobbin (if not already done)
  2. Pass the lower thread (that of the bobbin)
  3. Put the upper thread (that of the spool)
  4. Link the two wires.

1) How to Fill the Bobbin of a Sewing Machine?

The bobbin can be described as a small piece of plastic (sometimes metal) made up of two discs joined via a tube central. It appears like a miniature coil.

It serves to connect with the thread that is lower, which is one of two threads required for the operation of the machine. After all, the thread is used up it is required to remove: it is the process of winding the bobbin.

If yours is already filled, you can go directly to step 2: pass the lower thread. Otherwise, follow these steps to make a can of zero.

a) Place the coil on its axis

The axis, which is also known as the “spool pin”, is the biggest rod that is on the uppermost part of the machine (made from plastic or metal).

The spool holder is placed either vertically on the right side of the top of the machine, or horizontally rather in the center. Some machines also have both types of axles side by side.

“The axis angle does not affect the quality of the seam but it defines the type of bobbin you should use.”

If the axis of the machine is vertical, the spool pin can be submerged into the machine to safeguard it during transportation. In this situation, you must first take it out, then place the coil over it.

If the axis is horizontal move the spool to that position, to be followed by the spool holders..

b) Pass the thread through the thread guide and around the wheel

The thread guide is situated on the top side of the unit however, it is on the left. It is a tiny hook or even a notch. The wheel is directly on top of it, and towards its left, or its right, depending according to the design.

The thread should be passed through the thread guide, and then over the wheel. You’ll see a small illustration near it that shows how to wrap the wire around it.. There are two main scenarios:

  • The thread makes a complete turn of the roller and crosses at a point
  • The wire only makes a half turn

On certain machines, a tiny flutter sound indicates that threads are set in the thread guide.

c) Thread the bobbin

Now, you can thread the thread through the hole of the disc bobbin from the outside in. Just a few centimeters will suffice. In the event that it is hard to get through, trim the ends using scissors (or dampen it) to create a clean edge, making it easy to insert.

Then locate the stem for the bobbin (called the bobbin winder). It is located next to the spool holder, is smaller than it, made of plastic or metal, and is always vertical.

Place the bobbin in it and turn the hole upwards and secure the thread’s free end in your palm.

Then, insert the winder into its small tunnel to link the motor to the winding mechanism.

Once everything is set, turn the sewing machine using the button for filling bobbins. The machine will draw a thread out of the spool, and wrap it over the bobbin. Keep the free end with a firm grip throughout the initial turns to keep it from escaping its hole. Then let it go and the thread will stand by itself.

d) Finalize the bobbin

At the end of the winding, you can cut both ends of the wire. The free one to prevent the thread from getting stuck in the machine during sewing, and the one connected to the spool to simply unhook the bobbin.

When you have finished the winding process, it is possible to cut the wire on both ends. The one that is free to stop the thread from becoming stuck within the machine during sewing, and then the one attached to the spool removes the bobbin from the spool.

Then push the winder “switch” back to its original position before removing the bobbin.

Once you have it in your hand Check it over to ensure that the winding process has been completed smoothly. It should have been uniformly wound around the spindle of the bobbin without any visible bulge because of excessive accumulation of thread at one spot.

2) How to Pass the Lower Thread (That of the Bobbin)?

Passing the lower thread of a sewing machine simply consists of placing the bobbin (covered with a thread of course, otherwise wind it beforehand) in its housing located under the needle.

In a horizontal box opening from the top, you just have to clear the passage before opening the box. To do this, raise the needle (by turning the handwheel towards you) and the presser foot (thanks to its lever). Then open the box by pulling on its latch.

To insert the bobbin, open it and place it in a vertical position. Be careful to place it as far as possible in front of your needle. The lower part of your machine is equipped with a metal plate that has a hole through which you can pass your bobbin thread. The tip must be very close to or even touch the needle so that when passing through this metal plate, your thread does not bend too much.

Horizontal box (top opening)

The bobbin, which is a special type of spool that allows you to store your thread on the machine and thus use it as needed, comes with a small metal or plastic plate (depending on the model) that covers the housing. This plate can be lifted to reveal the housing, allowing you to replace a full bobbin with an empty one—which is something you should do often to avoid tangles in your thread.

The first step of replacing a bobbin is to put it in its case. The most common type is horizontal, with the top opening on the right. When you take a look at the case, you’ll see that its opening is rectangular, with two notches on either side (shown in ). Place the bobbin flat (with the discs facing up/down) so that it turns counter-clockwise within the case and so that you have space for your hand: . Now place one hand inside of the case and hold onto the thread coming out of the bobbin; with your other hand keep tension on this thread while putting down the bobbin. You should hear a click once it’s in place.

Vertical housing (opening from the front)

If you have vertical casings that are vertical, the space under the needle is completely blocked. However, a hole in the cover of the machine shows the existence of a cover that can take off. It typically slides or tilts in your direction.

These machines are called “front opening” because the needle moves vertically into place on a shaft when the bobbin case is lowered. The bobbin itself moves horizontally, and it’s contained by a metal case (usually tin) called a bobbin holder, which is placed inside the machine. To fill this case with thread, you’ll want to replace it with another one—the one that comes with your machine will be too small for regular use.

Remove this bobbin holder using its tab, turn it to see the opening, and put the bobbin in it with the thread that goes to the right so that the bobbin turns clockwise. a watch when you pull the thread.

Still, on the side of the opening, you can see a small notch on the edge of the bobbin holder as well as the second thickness of metal there. The wire should be slid into the notch and under this second layer.

Now place the bobbin holder back into the case as you found it. A small hook protruding from the cylinder must line up with a hole in the housing space to fit. You can locate it by eye and aim, or simply push the bobbin holder by turning it until you feel that it sinks correctly into the space provided.

2) How to Put the Upper Thread (That of the Spool)?

The spool provides the top thread, which is the primary thread that creates the seam that appears on the surface of the cloth.

The thread should follow a specific threading path, which traverses various mechanisms to ensure that it is in the correct tension. The path is typically indicated by the machine in the form of numbers or an arrow. It is composed of three phases:

1) Place the reel on its support

If you’re not yet making the bobbin spin (and you have already placed the spool) then place it onto the spool rod, which is the large rod on top of the machine. Be sure the spool can be used for its position and make sure you have the spool holder in case there’s one.

2) Pass the thread along its threading path

Sewing machine thread path

Then, it has to go through the double trench that is visible at the machine’s front and then through the vertical axis that runs between the needle and its thread guide.

Then, bring the thread upwards in the second trench (the one to the left side if you went to the right, and reverse) to the lever for thread take-up. The lever is an upwardly opened metal hook, often a Ring.

Finally, go back down the thread in the trench by which it came up and bring it to the level of the needle.

3) Thread the sewing machine needle

Thread the needle

Threading a sewing machine needle can be slightly daunting at first, but this step really isn’t rocket science—it’s actually quite simple when you get down to it.

After passing the thread through the hole in the bottom of the needle (called the eye), simply pull 10-15 cm of thread well through the needle, from front to back or from right to left depending on your model.

 If you’re having trouble threading your needle, there are two common reasons for this: 

1) if you can’t thread the needle, cut or moisten the end of the thread to have a clean edge that will pass more easily;

 2) if that doesn’t work, try using a needle threader that many sewing machines come equipped with. This is often a small plastic device with a handle, and it can be purchased separately as well.

3) How to Tie the Upper and Lower Thread?

To tie the upper and lower threads, follow these steps:

1. Hold the upper thread (the one on top) with your left hand without pulling it.

2. Operate the sewing machine as if to sew, but gently. You can use the pedal if you’re confident you can go slow, otherwise, the steering wheel works just fine. Always turn the steering wheel towards you, never in the opposite direction, otherwise, it will make knots.

3. You will thus see the operation of the machine in action: The bobbin rotates dragging the lower thread while the needle goes down with the upper thread. This is caught in the wake of the lower thread and takes it with it when the needle rises.

4. Once the needle is completely up, you will see that a loop has formed. Pull-on it to free the end of the lower thread upwards.

The two threads are now reunited. All you have to do is close your bobbin case to start sewing!

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