Anyone have any experience with using High Density urethane sheet goods?
It is a closed cell rigid polyurethane foam commonly known as Sign Foam or CoraFoam.
We're looking to construct some very large slant boards for an upcoming quilt show and are looking for a lightweight option to Medex/ Medite. From what i've found it seems to be an extremely stable material, but was wondering if anyone has done an Oddy test or had any experience with it?