I have 4 metal kitchen chairs, tufted button back, square cushion seats which are stapled and screwed onto frame. I've never recovered anything but do not want to toss entire kitchen set just because chairs are worn.
Chairs are white enamel frame and comfortable.
All advice welcomed. Thank you very much. Well, I don't think it's going to be easy, but you have lots of help here. It's very chic now, and that might be an easier job for you to do and keep you at a compfortable skill level. There are lots of ways to fashion covers for the chairs that can tie, velcro, button on.