About to brace this to fix it (6)
I believe the answer is:
repair
'this to fix it' is the definition.
'repair' can be an answer for 'to fix' (to fix something is to repair it). I am unsure of the rest of the definition.
'about to brace' is the wordplay.
'about' becomes 're' ('re' means regarding or about).
'to brace' becomes 'pair' (a brace is a pair of something).
're'+'pair'='REPAIR'
Can you help me to learn more?
(Other definitions for repair that I've seen before include "Mend - go" , "retire" , "Patch up" , "Restore (something) to good condition" , "Once, return" .)