Filed from 2 published puzzles

HONING

Set to 2 different clues across 2 published puzzles, most often “Fine-tuning” — The New York Times, Friday, 7 January 2011.

6 letters

Every clue on record, most used first

  • Fine-tuningonce

    The New York Times — Friday, 7 January 2011

  • Perfectingonce

    The New York Times — Thursday, 17 February 2000