Thread: Why Does my Sewing Machine Clump the Bobbin Thread?
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Old 02-01-2013, 08:54 PM
  #17  
sandilee
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Join Date: Aug 2010
Location: st. louis area
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Mine was doing the same thing......it was the top spool of thread. Somehow it got twisted around the little pole it sits on and wasn't/could't distribute the thread evenly. Check you top spool to make sure.
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