Gaze upon my radiators ye mighty, and despair!
I have used 22mm, 15mm and 10mm pipe – compression *and * solder joints.
I have managed to not burn the house down, or singe myself significantly.
And, Krispy-Fried Christ! – It works!
(Ok, the end result of all this effort is basically to move one radiator from one side of the room to the other – but I’m still impressed with myself – if only because of the chaos I’ve wrought about the house. I must find my camera to record the mess)
Bring on those winter chills!