Does bobbin direction matter?
Make sure the bobbin thread unrolls in the correct direction when installing the bobbin into the bobbin case. … If the thread unrolls in the wrong direction, the needle may break or the thread tension will be incorrect. Use a bobbin that has been correctly wound with thread.
What happens if I use the wrong 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.
Are all sewing machine bobbins the same?
Types of Bobbins
Bobbins not only come in different sizes, but also in metal as well as plastic, and empty as well as pre-wound. While machines can only use one bobbin size, whether it is plastic or metal does not typically matter, however consult your machine manual to be sure.
Is a bobbin case necessary?
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.