Thread: Boye #13 Shuttle
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Old 05-07-2020, 05:56 PM
  #5  
WIChix
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Join Date: Jan 2015
Location: Wisconsin
Posts: 472
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It may be as simple as the upper thread tension being too loose.
As a general rule, issues on the bottom of the fabric indicate a tension issue on the top, and issues on the top indicate a tension issue on the bottom.
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