double cut foam vs plain

Discussion in 'Materials' started by idkfa, May 29, 2015.

  1. idkfa
    Joined: Sep 2005
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    Location: Windward islands, Caribbean

    idkfa Senior Member

    Recently got some 5/8" double cut core foam and was supprised by how wide the curfs were 1mm, is this typical? Do they get wider as the foam gets thicker, as to allow it to bend?

    1mm curfs the double the resin used in laminating the foam, but does this add significantly to shear, compression and bond to the skins strength? eg M80 becomes M90?

  2. gonzo
    Joined: Aug 2002
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    Location: Milwaukee, WI

    gonzo Senior Member

    The compression strength will be greater if the resin goes from skin to skin. Basically, it is creating a honeycomb. In shear, the increase won't be as significant.
  3. Mr Efficiency
    Joined: Oct 2010
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    Location: Australia

    Mr Efficiency Senior Member

    The resin doesn't go all the way through, though. What is the application that required the kerfed foam ?
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