Abstract: The invention describes making core structures for tooling panels air permeable and resistant to higher temperatures. Core structures may be a non-woven made from fibers that may be treated with an adhesion promoter. The fiber is then treated with an outer-coating. Proper choice of outer coating allows the tooling panel to function at higher temperatures. The non-woven core may be constructed in various dimensions. Air permeability allows tooling panels to show superior response to changing temperatures. The non-woven may be bonded with another to form a larger tooling panel. The outer surface of the tooling panel may be coated with a material such as rigid foam that can be machined to a pattern placed in contact with material in manufacture a part. The permeable core structure can be made from permeated plastic, wood, metal, ceramic and the like.

Abstract: Described herein is a monolithic three-dimensional composite having a three-dimensional layer impregnated with an outer layer of polyurea, polyurethane, or a blend thereof. In one aspect the three-dimensional layer is woven fabric of a plain 4-layer tubular weave. Optionally, the outer layer has a three-dimensional relief to simulate three-dimensional structures.

Abstract: The present invention provides a modeling paste comprising a latent material which can be applied as a thick layer to a substrate and which after activation rapidly crosslinks to a machinable surface.