This is driving me mad. I have never been confident with plumbing, too much mess if it goes wrong. I have decided however to fit an outside tap myself, cos surely it can't be that difficult . The problem I have, is that I simply cannot get capilliary feed fittings (straight couplings and 90 degree elbows) to stick to the copper pipe. I can't get the solder to stay on the pipe, what on earth am I doing wrong??? Don't say use compression joints, please, I have loads of capilliary feed joints, piping, and solder (lead free or otherwise unknown) left over from our central heating installation.