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Old 07-08-2012, 11:37 PM
  #9  
bakermom
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Join Date: Jul 2010
Posts: 1,789
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there is a difference. my Ult takes the smaller 3/8" bobbin. The smaller machines like the 6000i takes the larger 1/2". one is brother part SA155(3/8"), the other SA156 (1/2")
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