Tinning is simply the soldering of stranded wire to make solid wire, but many railroaders are not aware of this practice and its benefits.

Why tin? Soldering the ends of stranded wire eliminates the fraying of stranded wire which can become a nuisance over time when the wires leading from the feeder track have to be stripped for the transformer posts. Also this type of wire is easier to cut to length for intricate repair work. It is not recommended for Marklin plugs because it can be brittle and break when screwed into these connections, Marklin wire makes a better connection with these plugs.

Before soldering a connection it is recommended practice to tin the ends of stranded wire to make soldering easier.

Siding: mini-club wiring of circuit boards can be a touchy exercise, tinning the ends of wires to be used and cut to just enough length will shorten the time the circuit board is subjected to soldering.