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Old 08-13-2014, 07:08 AM
  #28  
BettyGee
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Join Date: Oct 2010
Location: Colorado
Posts: 2,254
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The felt disc keeps the spool steady and allows the thread to flow evenly. Seems like a small thing, but it works. Every machine I've ever owned/or now own has the disc. Easy to make if it becomes worn.
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