There are a couple of things that could cause your sewing machine to jam when you backstitch.
One possibility is that the bobbin thread is not catching properly on the needle. This can happen if the thread tension is too tight or if the bobbin is not threaded correctly.
Another possibility is that the fabric is bunching up in front of the needle which can also be caused by incorrect thread tension or by trying to sew too quickly.
If your machine jams when you backstitch stop and check to make sure that the bobbin thread is catching on the needle and that the fabric isn’t bunching up in front of the needle.
If it appears that either of those things is causing the problem adjust the thread tension or slow down your sewing speed and try again.
How Do You Fix A Sewing Machine That Keeps Jamming?
If your sewing machine is jamming there are a few things you can do to try and fix the problem.
First make sure that you’re using the correct needle and thread for your fabric.
If you’re using a heavy-duty needle switch to a standard needle and vice versa.
Also check the tension on your machine; if it’s too loose the threads can bunch up and cause jams. Finally clean out your machine regularly to avoid the buildup of lint and other debris.
If all else fails take your machine to a qualified repair person for service.
Why Does My Thread Break When I Backstitch?
Most likely your thread is breaking because it’s too thin. A backstitch is a strong stitch and it needs a thread that’s strong enough to hold up to the tension.
A thin thread might work for other types of stitches but it’s not going to be able to hold up to the tension of a backstitch.
When you’re choosing a thread make sure you select one that’s labeled as “heavy” “extra heavy” or “double-stranded”.
These threads are thicker and will be able to withstand the tension of a backstitch.
Why Does My Upper Thread Keep Jamming?
There are a few things that could be causing your upper thread to jam.
One possibility is that the tension on your machine is too tight.
This can cause the thread to bunch up and eventually jam. Another possibility is that your needle is not inserted correctly.
Be sure to insert the needle all the way into the clamp before starting to sew. Finally make sure you are using the correct type of needle for the fabric you are sewing.
If you are Sewing heavyweight fabrics use a heavier-weight needle such as size 14 or 16.
If you’re sewing with delicate fabrics use a smaller-weight needle such as size 11 or 12.
Also be sure to choose the correct point style for your fabric and project. If you’re still having trouble take your machine to a qualified repair person for service.
Why Does My Bottom Bobbin Keep Jamming?
There could be a few reasons why your bottom bobbin keeps jamming.
It could be that the tension on the bobbin is too loose or that the thread is not feeding evenly onto the bobbin.
It could also be that the bobbin itself is damaged or misshapen.
If the tension on the bottom bobbin is too loose try tightening it slightly and see if that helps.
If the problem persists you may need to replace the thread on the bottom bobbin with a new one.
Make sure to follow the manufacturer’s instructions when doing this.