I'm ready to throw my Singer Tradition sewing machine out of the window. I'm about two thirds of the way through making a dress and now the thread keeps getting caught above the bobbin so that there are several threads coming up through the hole and everything jams.
I ran out of thread in the bobbin so I made a new one and since then the machine gets jammed after sewing successfully for about 20-30cm. It works fine up to that point.
I have rethreaded the top and bottom several times, made a new spool, taken the whole thing to pieces for a good clean, changed the tension on the top and bottom, put in a new needle, tried different fabrics, and tried using different thread. After every troubleshooting attempt the same thing happens: it sews fine for 20cm and then jams up.
I am completely out of sensible ideas. The manual for this machine is useless. My next attempt will involve getting out a screwdriver and taking the entire machine to pieces.
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Breath...I know this problem and think I can help. If your bobbin thread is "misthreaded" even by a couple of rows, it will mess you up. I make sure when I wind a bobbin that it goes up and down, "bouncing" off each side so the thread is wound evenly.
If this isn't the case, it might be that your thread is not "catching" properly.
If this doesn't help you might need to see a sewing repair person. Or, check with your local thrift store and find a nice second hand one. Even the new ones might be cheaper than repair...which can be spendy.
I hope that helps.
PBP
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