One kind of timber that's just made for the job (5)
I believe the answer is:
ideal
'just made for the job' is the definition.
I can't judge whether this defines the answer.
'one kind of timber' is the wordplay.
'one' becomes 'I' (Roman numeral).
'kind of timber' becomes 'deal'.
'i'+'deal'='IDEAL'
'that's' is the link.
Can you help me to learn more?
(Other definitions for ideal that I've seen before include "Ailed (anag)" , "Just perfect, couldn't be better" , "Perfect; visionary" , "Model of perfection" , "superb specimen" .)