Answer: ferruling

AnswerCrossword Clue
ferrulingto furnish with a ferrule
ferrulingring or cap, usually of metal, put around the end of a post, cane, or the like, to prevent splitting
ferrulingFERRULE, to fit with a metal cap to prevent splitting, also FERREL, FERULE
ferrulingbushing or adapter holding the end of a tube and inserted into a hole in a plate in order to make a tight fit, used in boilers, condensers, etc.
ferrulingshort metal sleeve for strengthening a tool handle at the end holding the tool