Wasn't smiling earlier when I had to get the first fix done before a chippy could start. Old threaded copper pipe. The 3/4 was fine with ef adapters but could I get any fitting on the 1/2 inch. The walls of the pipe were so bloody thick. Like nothing I've ever seen before. Not a single fitting in the box would go on this pipe until I got the 15mm slip coupling on it. Think the pipework had been there
about 60 years.
Perseverance paid off.
Bottom line, I wasn't smiling!!