How to edit thread title?

[Dav]

Hello
I was wondering if it is possible to edit a thread title some months after it was first posted and if so how? I was adding some new pictures to an older thread that I had started and wanted to let people know that I had done so in the title.
I hope I've asked this in the correct part of the lounge if not let me know.
Thanks in advance for any help.

 

[resortes805]

On that note, how do I edit a post in the 'vintage finds' section that has already been posted? There used to be a button alongside the 'reply' button, but I don't see it anymore on my interface.

 

[Dav]

I see that I can still edit this thread title so I assume there must be a time limit. Anyone know how long that is for future reference.