Hi @smyles. Our personal opinion on this is that it is generally okay with some caveats. Make sure that the article you are reposting is still relevant to today, and that you believe it will still be beneficial to the community. Make some necessary changes if needed, add an introduction, add a closing, depending on what's appropriate. You can also indicate and reference your other blog to direct people to the original content (and also to eliminate any potential confusion).

There are also some similar discussions on this matter in Steemit. Just google and you'll find these posts.

All the best.