My Singer Heavy Duty 4452 sewing machine is completing a seemingly random amount of each buttonhole I try to sew. Sometimes it does the full thing, sometimes only half, part of one side, all but the end, etc. When it stops making progress, it just keeps going back and fourth in place. The "push" lever is down and I push it back every time. Is there something I need to do for this specific problem, or is it something that more general solutions will fix? Thank you.
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I can suggest a couple things. Does regular zig zag stitching perform properly? If not:
---Try adjusting the tension and foot pressure to optimize your fabric and the thickness of layers.
---Try a different needle (could be bent slightly).
---Slow the stitching wayyyy down; you might be able to better discern the obstruction or what's catching that way.
If regular zig zag is ok, then you might have a bent buttonhole foot. :-( Sometimes this happens with forceful sewing on thick fabrics.
You might have to adjust the feed dogs. There are other suggestions here sewingiscool.com/
Check if you are following the buttonhole sewing instructions correctly, check settings. Maybe you miss something. In the Instruction Manual for Singer Heavy Duty 4452 it is on page 38: manualsbrain.com/
Check the bobbin area.
Clean and oil at moving parts of the buttonholer.
Check if it is free of grit/dust.
Check if there is no lint or thread in the buttonholer or the bobbin area.
Check if the thread settings are correct.
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