On 17/05/2021 10:01, alan_m wrote:
Changing the subject slightly, has anyone tried those "heat shrink
plus solder" connectors? Obviously you will need fresh, clean wire but
my soldering experience leads me to be slightly skeptical over how
well they will work. I suppose the pressure from the heat shrink will
help, and perhaps they use an active flux.

They are not new.

I remember Tandy selling "solder with a match" tape in the late 70s.

--
Adrian C