In message , "Ron(UK)"
writes
N_Cook wrote:

So what is the best mechanical technique?

Have you actually tried to solder the wire without removing the enamel
first?

Ron

Of course, if the wire is actually polyurethane-covered (not enamel),
you don't even bother to remove it. It comes off when you tin the ends
(prior to the actual soldering). Even if it is enamel-covered, you may
still be able to remove it by trying to tin it using a very hot
soldering iron (eg Weller #8 bit) - or, at least, after trying to tin
the wire (and apparently failing), the enamel may be crumbly. If so, you
can usually scrape it off with your finger nails.
--
Ian