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Old 01-07-2014, 05:27 PM
  #34  
gale
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Join Date: Apr 2007
Location: North-Central Indiana
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Coroplast is like corrugated cardboard, only plastic. I'm not sure if you can pin into it. Foam core board is like foam covered with posterboard but the posterboard cover is coated in a plasticky stuff. You can pin into it.
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