Produce artwork in Letchworth (4)
I believe the answer is:
etch
'produce' is the definition.
(I know that etch is a more specific form of print)
'artwork in letchworth' is the wordplay.
'ETCH' is hidden within the letters.
However, I'm unsure how the hidden word is indicated.
Can you help me to learn more?
(Other definitions for etch that I've seen before include "Cut deeply (with acid?)" , "Carve into surface of something" , "Engrave (metal, glass etc.)" , "Chase" , "Carve or engrave into surface" .)