MB3 119b: Broken Furniture on Shabbos (313:7-10); Opening Containers on Shabbos (314:1)

Reattaching a leg to a bench on Shabbos.

אין בנין וסתירה בכלים. Opening a kli on Shabbos. Does opening a bottle on Shabbos constitute creating a kli on Shabbos? What if it is a disposable container (e.g. milk carton)?