Initially choose a man-made material for something with which to write (6)
I believe the answer is:
crayon
'material for something with which to write' is the definition.
'crayon' can be an answer for 'material' (thesaurus). I'm unsure of the remainder of the definition.
'initially choose a man-made' is the wordplay.
I cannot quite understand how this works, but
'a' is present in the answer.
'man' could be 'ryon' and 'ryon' is located in the remaining letters.
A single letter 'c' remains which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for crayon that I've seen before include "Coloured rod" , "Producer of sketch" , "Drawing pen" , "Drawing implement" , "Coloured wax pencil" .)