Needle & Bobbin out of sync

Sounds like there is a hook of metal either on the needle or the bobbin case (sometimes happens when trying to sew something very very thick and the needle bends slightly and hits the bobbin case.). Suggest changing needle 1st, if this is not the problem, take out bobbin case and look and feel with fingers, if there is a mark where the needle has hit just use your own steel nail file and file the area very gently to remove the bur. Good luck!

Try a brand new needle--old damaged/bent needle will frequently fail to connect with bobbin thread.

If that does not resolve the issue, most likely the machine has been knocked out of time--most often occurs when the needle hits a pin or is deflected by thick fabric so it hits the needleplate or something in the bobbin area. You can search the internet for sewing machine timing or take it for service.

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Make sure the needle is put in the right direction and a new one. Also, check the bobbin to make sure it is one that fits properly.

Your sewing machine is likely to be out of timing. This means the needle goes under the throat plate to pick up the bottom thread but it is going at the wrong time. The bottom and top have to be synchronized. This is a problem that usually requires the replacement of gears. Anyway, it isn't a home fix problem.

Usually, the needle & fabric will release if you are able to remove the bobbincase and the needleplate. You should probably try to do this to remove the broken needle tip, although usually it will drop out of the bobbin area and land somewhere in the bottom of the machine.

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Sandra,
If the needle jams when sewing over thick items, it may be you have a dull needle? Not all machines can hem blue jean material without a hand to help the flywheel around, through the doubled over seams.

Additionally, when sewing the basic two pieces into one piece, start with the presser foot ON the fabric about a half inch sewing in reverse first, backing up to the fabrics edge and then proceeding forward through your fabric.

Fabrics too heavy or too light, are the common issues with home and commercial sewing machines.Knowing your machine and how to operate it; will get you through these "issues" when sewing.

Cheers, Happy New Year!
Kelly
Embroidery Services
San Diego, CA

if the machine still sews a straight stitch on top of fabric & also on bottom then it should be fine..
it's possible that the thick fabric, needle, & thread were not a compatable combination.
but also some sewing machine are not made to sew thick or heavy
fabric
but having the machine serviced would be a good idea & help to know why the needle thread is not working

Does not matter what machine you have from a 50's straight stitch to a newer model right out of the box. If your needle is hitting you are out of time. It needs to be reset and on that I can not help you as it is mechancal on the underside. What the needle is hitting is the bobbin arm.
When the bobbin arm swings around it picks up the top thread and loops it over the bobbon thread then releases the threads together for the loops and swings again for the next thread. When you hear the needle hit it is hitting this swing arm. That needs to be adjusted and that is called timing.
Open the bobbin case and turn the needle down by hand. You will see the needle as it goes through the throught plate down the catch the bobbon thread. You will see it hit the arm.
This needs to be backed off or set forward. Takes a trained person as I have never been able to do it myself. This happens when you sew to thick of a fabric, or go over several seams from light to thick. Or is you are pulling the fabric. If you head a CLUNK when it started then that is what I think it is.

Perhaps you have bent the needle. Or perhaps you have shifted the bobbin somewhat while removing jammed fabric.

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.

seems like the same problem I haad so I tried changing the needle looking for burrs or bent needle. maybe a piece of broken needle in the bobbin holder. or maybe the fabric requires a certain needle or the needle size is too big for the fabric you are using. or the machine needs cleaning I have started using canned air for this. and then if this fails then you should note the tension position and then try adjusting it one point at a time. always puting it back to where it was to start with good luck