Why, then, in Frank Herbert's "Dune" universe and every "Dune" adaptation ... As fancy as they were, though, a trusty knife or Crysknife (a blade molded from the sharpened tooth of a sandworm ...

Dune Part 2, the highly anticipated second half ... It's gorgeous This finely crafted, officially licensed replica of Pauls Crysknife is identical in appearance to the one featured in the films.