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Old 08-09-2021, 06:41 AM
  #29  
itssewfun
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Join Date: Feb 2011
Location: Rolla MO
Posts: 99
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If you machine came with plastic bobbins only use plastic. The weight of the metal bobbins can mess up the tension. I have not seen a problem when use plastic in a machine with metal bobbins. I work on a variety of machines at church.
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