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Old 08-09-2010, 05:31 AM
  #40  
catmcclure
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Join Date: Jun 2010
Location: Bay Area near San Francisco
Posts: 1,213
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If the thread is off (looping) on the bottom of the sandwich, then it's a top threading problem. If the thread is off on the top of the sandwich, then it's a bobbin problem.
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