Frequent question: Are sewing machine bobbin cases interchangeable?

While they are technically interchangeable in most cases, it is recommended that you only use one or the other. The weight of the bobbin can affect your tension and the way the thread feeds. These are the most common bobbins, as they are used with removable and inset bobbin cases.

Are singer and brother bobbins interchangeable?

Plastic bobbins and metal bobbins of the same size can NOT be swapped. Machines are set for a very precise tension setting. If they are set for a lighter plastic bobbin, the tension will change if a heavier metal bobbin is used. 6.

Which sewing machine part covers the bobbin and the bobbin case?

The needle plate is the flat, metal plate under the needle that covers the bobbin.

Are class 15 bobbins interchangeable?

Definitely NOT interchangeable! They look almost identical, but class 15 bobbins have flat ends, while class 15J bobbins have slightly curved ends. Sometimes they appear to work interchangeably, but even if they fit into your sewing machine, there is a risk of them jamming your machine up and causing major damage.

What happens if you use the wrong size bobbin?

The short answer is YES! Filling a sewing machine bobbin too tightly can make a plastic bobbin bulge or stretch the thread if you are using a metal bobbin. This may be hard to see but can cause all kinds of problems. Plastic bobbins can become compressed in the center causing the bobbin to distort.

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Are Brother bobbins universal?

There is no such thing as a universal bobbin, meaning no single bobbin will fit every sewing machine. Some sewing machines tolerate a slightly different bobbin better than others, but using the incorrect bobbin will most likely affect the stitch quality of your project, and could result in damage to your machine.

Do all Singer sewing machines use the same bobbins?

Bobbin Tips & Hints



Use only bobbins that are the same class/style as those that come with your machine – don’t substitute! SINGER® branded bobbins are recommended for best results.

When should I replace my bobbin case?

As long as you take good care of your bobbin case, it will perform well. However, eventually, it will cease to sew smoothly and will need to be replaced. Sometimes people think they only need to replace certain parts of the bobbin case, like the tension spring or the tension screw.

What does the bobbin case sit in?

How Do They Work? A bobbin case, when used with the correct bobbin, will hold the bobbin snugly in place, which will allow the machine to neatly unravel it. The bobbin case also adds tension to the bottom thread, much like the tension assembly for the top thread.

What covers the bobbin?

Bobbin Cover Plate. Clear, plastic cover (may be metal on some machines) that slides out or is removed to access the bobbin case to place or remove the bobbin.

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