Save all Rapidweaver files and 8.3 to external hard drive

There’s a bunch of posts on using multiple Macs with RapidWeaver.
You can use something like Dropbox, Sync or iCloud so an external drive should certainly work.

In preferences point the addons folder to A new folder on the external drive. RapidWeaver should copy everything it needs to the folder on that drive.

Before you start working on existing or new projects that are going to be shared on the external drive, make sure that you select the site resource option to copy into document option.