Yep, and the metal was not weapons-quality so almost none of it was used as ‘advertised’ was mostly a propaganda thing to make people feel like they were helping.
they then replaced many of these railings with regular mar materiel after the war. I've seen British fences made out of stretchers, rifle barrels, and cannon barrels
No, they confiscated them for the copper and tin despite the Hague convention of 1907 where it was decided to not do this during war.
Needless to say they didn't care.
English kings would strip the lead from church rooves to make their trebuchets. nothing has changed (a great many of these bells in many countries were probably donated; patriotism and religion go hand in hand. not sure how it went with the Nazis though)