A Bird Nest Of Tangled ThreadA massive nest of tangled thread is usually because the sewing machine is improperly threaded. Just because the tangled mess is on the bobbin side of the stitching, don't assume it is the bobbin. Most of the time it is because the sewing machine is not threaded properly. Put the presser foot up and unthread the sewing machine entirely. Use your sewing machine manual as a guide to be sure you are guiding the thread through all of the guides it belongs going through.
A sewing machine needle is the smallest and usually one of the least expensive part of a sewing machine to replace, you owe it to yourself to understand Everything About Sewing Machine Needles.
Fabric in not Feeding Under the NeedleMany sewing machines have a setting that lowers the feed dog. This is done for free-motion sewing, but the feed dog are what move the fabric under the sewing machine needle. If the feed dog are not coming up to move the fabric check for a setting that lowers the feed dog. If there is no such setting on your machine, take the throat plate off and clean out all dust, thread and lint. Oil according to your sewing machine manual. If the feed dogs still do not work, read your sewing machine manual. When all else fails, it may be time to take the machine in for repairs.
The Machine is Jammed and Won't SewAs scarey as it maybe, it is actually a common problem for the sewing machine to jam up and have nothing move. Your first step is to remove anything you were trying to sew. This may require gently tugging at the fabric and lifting it enough to snip at the threads that were sewing until you can get the fabric free of the machine. Now remove all the jammed thread, remove the bobbin, remove the throat plate or any other parts to remove all jammed threads and get the machine sewing again. Before you start sewing again, check your sewing machine needle. If it is even slightly bent it can cause this type of thread jam.
Breaking Or Shredding ThreadIf you have the thread breaking every so often or it is shredding until the machine jams, stop and take heed of a few things.
- Is the thread getting hung up on the thread spool it self. This could be a nick in the end of the spool or a place in the spool that is made to secure the end of the thread. Changing the direction the thread is feeding off the spool can eliminate that problem.
- Are you using old or inferior quality thread? Please have a look at Is there a difference in thread? You be the judge!
- Are you using a relatively new sewing machine needle? If the needle has sewn over pins it can have a nick in it that will play havoc with the thread causing it to break and shred. There are specialty needles that have a larger path for special threads. Know Your Sewing Machine Needles
- If the thread continues to break after all of the above cautions, take a time out to thoroughly clean out all dust and lint from the bobbin area and the tension disks. Run your fingers over the areas the thread travels to see if you can find any kind of burr or a piece of thread that could be snagging the thread while it travels through the sewing machine.