Used Zn-steel brake cables on my Brompton switching to Another Brake lever ...

had enough time with rust in upbent Brake-routing on girls bike repairs in past repairs .. that seized solid
Folding them has routed them from under the brake lever..

so grease was added.. [ Nice Upgrade they did was a V Brake rubber bellows between the side pull brake arms

so water was not so easily leaking down into the housing,]

the Soldered end makes Re greasing easier...






[welders supply has the 400F low temp, silver solder to try on stainless.. ]