Hi everyone, This is my first ever post on here so firstly hello everyone. I am currently designing a product that I wish manufacture from Carp Brand Tufnol. I am trying to work out the Thermal expansion in areas so that I can dimension my design properly to allow for growth and contraction. The only published data I can find for the Coefficient of Thermal Expansion is 1.9x10-6/K in plane of laminae. What exactly does this mean? I understand that tufnol like most composites is Anisotropic so it will expand and contract different amounts in different directions. So does "through plane of Laminae" mean that it only applies in the X-Y plane of a sheet of Tufnol? If so what is the Thermal Expansion value in the Z plane? Or am I completely wrong? Any help would be greatly appreciated. Thanks in advance.