Old 04-16-2016, 05:42 AM
  #4  
DOTTYMO
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Join Date: Jun 2010
Location: England Alton Towers
Posts: 6,673
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Take a measure which is flexible and move it along the scallops. You only need to do one long side and one short side. Add these two together and multiply by 2. I would then add on a good 6" for the final join and the corners may take up extra.
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