I tried to change the position of the zipper foot and ended up breaking the needle and now the bobbin thread keeps snapping when I try to sew. What should I do to fix this problem?

a zipper foot is one that is only half a foot
that allows the needle to get close to the zipper as for tensions
needle thread tension will be correct when you pull the thread just before threading the needle and you can feel resistance to pulling the thread

check the age of the cotton
cotton is not a single thread but a series of fine threads bonded with a glue
old cotton glue breaks down and the thread separates easilty
next check that the needle is installed correctly with the grove ( thread groove away from the bobbin hook
check the needle and hook timing because if it is off a fraction , the hook will pierce the the thread causing it to break
next check that the eye is the correct size for the thread in use
a needle eye too small for the thread thickness will jam the thread ans not let slide through the eye properly

The top thread breaks
1. the needle thread is not threaded properly
2. The needle thread tension is to tight
3. The needle is bent or blunt
4. The needle is incorrectly inserted
5. The needle thread & the bobbin thread are not set under the presser foot when starting to sew
6. the threads were not drawn to the rear after sewing
7. The thread is either to heavy or to fine for the needle
8. Try a different spool or cone of thread



Thread looping on the bottom of your fabric can be caused by little or no top tension or too much bobbin tension. Another cause is thread or lint caught in the top tension.Make sure the thread is between the tension discs and that no thread or lint is caught

The top thread breaks
1. the needle thread is not threaded properly
2. The needle thread tension is to tight
3. The needle is bent or blunt
4. The needle is incorrectly inserted
5. The needle thread & the bobbin thread are not set under the presser foot when starting to sew
6. the threads were not drawn to the rear after sewing
7. The thread is either to heavy or to fine for the needle

The needle thread breaks
1. the needle thread is not threaded properly
2. The needle thread tension is to tight
3. The needle is bent or blunt
4. The needle is incorrectly inserted
5. The needle thread & the bobbin thread are not set under the presser foot when starting to sew
6. the threads were not drawn to the rear after sewing
7. The thread is either to heavy or to fine for the needle

try changing the needle--just incase the needle tip is damaged
check for burrs in the thread guide area where the top thread runs
or even on the needle plate

Try a fresh needle and be sure the flat side of the needle shaft is facing the back of the machine.

Thread the machine with the presser foot in the up position.

Make sure the bobbin is inserted into the case so the thread is feeding from the bobbin spool in the correct direction and through the proper guides.

Hold onto the thread end at the needle and hand-walk the needle down into the needle plate and back up, bringing the bobbin thread with it.

Take both thread ends under the presser foot and to the back of the machine.

Hello,
Here are several things to try.

* When you insert your new needle, make sure it’s positioned correctly (usually with the flat side away from the bobbin, but consult your manual), that it goes all the way into the holder, and that the screw is securely tightened.


If there doesn’t seem to be a problem with your needle, try the following:

* Check your pressure foot and make sure it’s attached securely.


* Change your pressure foot Your pressure foot may be bent, causing your needle to hit it.


* Don’t sew over pins a needle that hits a pin can break. Always remove the pins from your fabric before they reach your needle.


* Don’t pull your fabric as you sew. You could be bending your needle back, causing it to hit your needle plate instead of going into the hole. Just guide your fabric, letting it feed on its own.


* Check your needle plate and make sure it's securely in position.


* Change your needle plate. If you’ve been using a straight stitch needle plate (a plate with a small hole, often used for sewing fine, delicate fabrics), switch to a needle plate with a wider hole.


* Check the position of your needle. Sewing machines with zigzag capability allow you to adjust the position of your needle – right, left, or center. If your needle is not positioned correctly, it may be hitting your needle plate or pressure foot.


* Un-thread your machine and remove your bobbin. Clean any loose thread or lint out of your
bobbin case. Re-thread your machine, reinsert and re-thread your bobbin.

* Change your bobbin. There could be a nick along the edge of your bobbin spool that’s catching your thread as you sew.

Also, before you start to sew a seam, hold the upper and bobbin thread tails. Hold them back
and out of the way as you sew your first couple of stitches. This will keep them from getting
caught in your machine.

I hope these solutions help you.

Hello,
Here are some things to try.

If it's Your upper thread breaking:

* Rethread your machine
An incorrectly threaded machine can cause thread to break.

* Decrease the tension on your machine
The tension may be too tight for your thread.

* Reposition the spool of thread on the spindle
You know that little nick in the edge of a spool that’s used to hold the loose end of the thread? Your thread may be catching on this nick as you sew. Place your spool so that this nick rests against the bottom of the spindle.

* Reinsert your needle
Make sure it goes all the way into the holder and that it’s positioned correctly, usually with the flat side away from the bobbin, but consult your machine’s manual to be sure.

* Change your needle
Your needle may be bent or dull. The eye of your needle may have a nick in it that’s cutting the thread as you sew. Or your needle may be too small for the thread you’re using, in which case, change to a larger needle. And make sure your needle is appropriate for the weight and type of your fabric.

* Change your thread
Your thread may be weak. Or your thread may be fuzzy and irregular, causing it to catch in the eye of your needle as you sew. Cheap thread tends to be weak and fuzzy, so make sure to
use a quality, brand name thread. And if you’ve been sewing with an older cotton thread, which can dry out and become brittle with age, try a newer thread.

* Check your presser foot for damage to the needle hole
A burr in your presser foot’s needle hole may be cutting your thread. Gently smooth any rough spot you find with an emery cloth.


* There may be a burr in one of your thread guides, in which case, you may need to have your
machine professionally serviced to have the part replaced.


If it's Your lower thread breaking:

* Reinsert your bobbin
Your bobbin may not be seated properly in its case.

* Rethread your bobbin
Your bobbin may be threaded incorrectly or the thread may be tangled.

* Remove some of the thread from your bobbin
If your bobbin is very full (if it’s hard to insert into the case, it’s too full), this may be keeping your bobbin from turning smoothly.

* Rewind your bobbin thread
If your bobbin thread is wound unevenly, this may be keeping your bobbin from turning
smoothly.

* Try a new bobbin
There could be a nick along the edge of your bobbin spool that’s catching your thread as you sew.

* Clean the lint from your bobbin case
Lint in your bobbin case could be keeping your bobbin from working properly.

* Check the needle hole in your throat plate for rough spots
A burr in the needle hole of your throat plate, usually caused by the needle hitting the throat plate, could be cutting your thread. Gently smooth any rough spot you find with an emery cloth.

I hope one of these solutions work for you.

The tread only breaks in the needle. what can i do . i don't get to sew anything . I tread the needle and get everything ready and start the machine and as quickly as that the tread is broken and the machine has not sewn at all.