At the beginning of the movie, when Grant comes back to the Montana dig site, and Billy wants him to see the rapid prototyper, after he explains how it works to Grant, the machine finishes the Raptor nasal cavity, which he lifts out, it is obviously made out of fiberglass, and has fiberglass fibers all over it, he holds it up for Grant to see, and the camera switches to Grant, when it switches back to Billy, before he blows thru it, the Raptor nasal cavity is completely clean of all fibers, and almost looks polished.