Solar explorer made of bones. Nov 5, 2014 11:12:46 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Swampy on Nov 5, 2014 11:12:46 GMT -5 “The foil is made out of titanium, so it’d be a bit expensive if you wrapped your roast chicken in it every Sunday,” says Draper, a heatshield engineer. “But the black surface that coats the titanium is made from powdered baked animal bones.”Cool!