Turning a chunk of wood for modellers (5)
I believe the answer is:
balsa
'of wood for modellers' is the definition.
The definition suggests a singular noun which matches the answer.
'turning a chunk' is the wordplay.
'turning' shows that the letters should be reversed in order.
'chunk' becomes 'slab' (I have seen 'Chunk of wood' mean 'slab' so perhaps 'chunk' could also mean 'slab').
'a'+'slab'='aslab'
'aslab' in reverse letter order is 'BALSA'.
Can you help me to learn more?
(Other definitions for balsa that I've seen before include "wood for raft" , "Wood used in model making" , "A slab (anag.)" , "Very light timber" , "Tree yielding light wood" .)