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Old 05-26-2016, 04:08 AM
  #3  
ManiacQuilter2
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Join Date: Jun 2011
Location: Southern California
Posts: 19,131
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I usually mark my lines with a Hera marker by Clover.
http://www.joann.com/clover-hera-marker/9620873.html
As I go along, I keep rechecking that my lines remain straight. I will use painter's tape to mark my reference lines.
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