Old 01-26-2015, 03:23 PM
  #33  
Rodney
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Join Date: Oct 2013
Location: Centralia, WA, USA
Posts: 4,890
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A razor blade used as a scraper and some oil as a lubricant does wonders for rust removal on machined surfaces like where the stitch length regulator is. I wouldn't be surprised if the serial number was easily visible after cleaning it.
Rodney
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