Am responding to the 4D printing article and am sharing an idea. I am thinking of a hat where for rain or sun it could grow a brim. How could one do this?
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Am responding to the 4D printing article and am sharing an idea. I am thinking of a hat where for rain or sun it could grow a brim. How could one do this?
you'd need a hinged brim that unfolded when wet and folded when dry.