Macro perforated honeycomb has a transversal perforation that allows gasses and liquids to spread evenly among the whole element; nonetheless the honeycomb structure supply rigidity and supports necessary for elements such as big molds.
The uniform diffusion of a heated air flow is often crucial for the hardening of an artifact, for this reason the macro perforated honeycomb is used in molds for large components, such as those of wind blades.
High performance materials such as POLYPROPYLENE and high density foams such as PIR, PET and PVC can be used for the wind blades components themselves.
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