>So fixing it is as easy as spinning up a wood lathe and making a new leg.
Which, for 99.99% of humanity, equates to "not easy".
Which, for 99.99% of humanity, equates to "not easy".
I don't have a lathe, but when I run across one, I'll give it a go, or ask a friend.
But also I wonder if they didn't include some glue to hold that chair together originally. Screws in furniture are mostly just there to keep the thing together while the glue cures.
Things wear down, and about the only thing you can hope for is replaceable parts. Chair of Theseus, indeed!