dandy-roller

/D AE1 N D IY0 R OW0 L ER0/
noun
  1. 1

    A roller sieve used in machines for making paper, to press out water from the pulp, and set the paper.

Source: https://en.wiktionary.org/wiki/dandy%20roller, https://en.wiktionary.org/wiki/dandy-roller