that's what I would do :
Go in your Project Lib
Right clic on the project
Ask for "Duplicate project"
Then you're asked if you want to (1) just duplicate the project, (2) duplicate with referenced events, or (3) duplicate with just the clips that have been used.
Chose the (3) option
Rename as a new project (with a new name)
Delete the previous one with non used clips.
And you end up with a new project with just the clips you used
I'm confused, how does duplicating the Project file affect unused media (Events)?
One of the problems with FCP X (in my opinion) is it separates the media from the project. I have an Event created for a specific project and there are a ton of clips in there that are not being used in the project, and those clips are taking up space on the hard drive. How do you easily tell FCP X to identify the media (events) that are not being used in a project?
I know it's boring not to have an easy way to identify and erase the "non-used" clips.
But you didn't follow my suggestion :-)
You ask : "how does duplicating the Project file affect unused media (Events)?"
I gave you an answer : you create a NEW project with ONLY THE REFERENCED MEDIA.
(And then, of course, you distroy the previous one. That easy. Why looking for somehting else that doesn't exist yet).
For me, Switchie's method was clear and worked perfectly, so thank you. Bit of a silly work around to have to do that rather than a command from within the project, but that's Apple's design. Your method would not have been entirely obvious because I don't think it's intended for that purpose, but it does do the job. Cheers!