Metalworker initially travelling as member of crew? (6)
I believe the answer is:
tinman
'metalworker' is the definition.
(someone who works with tin)
'initially travelling as member of crew?' is the wordplay.
'initially' says to take the initial letters.
'as member of' becomes 'in' (eg being in a club is being a member of it).
'crew?' becomes 'man' (crewing is a kind of manning).
The first letter of 'travelling' is 't'.
't'+'in'+'man'='TINMAN'
(Other definitions for tinman that I've seen before include "metalworker?" , "Worker in a silvery-white metal" , "Metallic friend of Dorothy's in The Wizard of Oz" , "heartless character" , "He seeks for a heart in Oz" .)