Thread: Singer 403 A bobbin
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Old 05-15-2022, 11:39 AM
  #2  
JoeJr
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Join Date: Apr 2020
Location: South of St Louis
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If this chart is accurate

https://www.singersewinginfo.co.uk/bobbins

There would be differences between the 66 bobbin and the apollo bobbin it lists for the 403. I would look for some plastic bobbins and try those.
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