So we had a bathroom tap that looks pretty much like this:
the red lines I drew are where the tap has a kind of screw joint that separates the head from the side hot/cold taps. The problem is the head of the tap (everything above the red lines) has fallen off! :( We can't screw it back, the screw joints seems eroded/rusty/useless. And the metal head of the tap is really heavy so it doesn't stay put long even if we try. Is there any home-made material or gluey thing that has the strength to hold the tap's head back on the bottom screw without actually blocking up the water flow?