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Bobbin Case

edited March 2013 in Ask An HQ Expert
What would cause the bobbin thread to pop out (repeatedly) of the tension slot on the bobbin case? I have rechecked the orientation of the bobbin in the case.


  • Double check your manual. Load the bobbin so that the thread is clockwise, then slide it through the tension slot and up into the thread opening above the tension slot. Leave about 6 inches of thread loose. I can't imagine why it would pop out. Are you snapping the bobbin into place in the machine when it's loaded?
  • I've done all those things and definitely snap the bobbin into place. This is a new occurrence. I did tighten the bobbin tension which helped but then caused some breaking of the top thread.
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