We've a sound way to fabricate stuff (5)
I believe the answer is:
weave
'stuff' is the definition.
(thesaurus)
'we've a sound way to fabricate' is the wordplay.
'we've a' anagrams to 'WEAVE'.
However, I'm not sure how this is indicated.
Can you help me to learn more?
(Other definitions for weave that I've seen before include "Make cloth with strands of wool or cotton" , "Make material" , "Zigzag (through traffic?)" , "Combine into a whole" , "Make tapestry - wind in and out" .)