On 09/05/2021 13:54, JohnP wrote:



Just understanding the logic is a big help. Plumbers and Boilers
comes to mind. Many only seem to be able to relate to an old type of
system. Even a motorised valve seems to flumox them.

It's a good job I can look after my own heating system - I can't see
the average plumber understanding the motorised valve and timer/stat
per room, with mains operated valves, battery powered stats and 12V
switching via relays, with my own, home made PCBs.


But he learned how to wipe a lead joint to become Time Served.

I've wiped one or two lead joints (although the only lead we have left
now is the supply to the house), but I am definitely not a plumber - I
don't even know where my moleskin has gone.