Copper and daughter get set for club (6)
I believe the answer is:
cudgel
'for club' is the definition.
(cudgel is a kind of club)
'copper and daughter get set' is the wordplay.
'copper' becomes 'Cu' (chemical symbol).
'and' is a charade indicator (letters next to each other).
'daughter' becomes 'd' (genealogical abbreviation).
'get set' becomes 'gel' (I've seen this in another clue).
'cu'+'d'+'gel'='CUDGEL'
(Other definitions for cudgel that I've seen before include "Batter" , "A ruffian's club" , "(Strike with a) heavy stick" , "Bludgeon" , "Heavy staff, club" .)