Catenary...

I don't intend to model catenary wires in Z but may might (under duress) make some etched brass wire-holders in time (although that will make track cleaning difficult).

I definitely want the masts as a minimum though, and will need them to be in place before the track is ballasted.

Using a method used previously, I soldered these up using some H-shaped brass attached to a small foot that can be glued to the layout and then scenicked over to hold them down.

Some Plastruct could be used for this but the brass has the benefit of being subtly bendable (if its vertical angle needs to be corrected) but stiff enough to resist accidental bumping which might break plastic ones.

As can be seen, these were welded up on a bit of firewood, and then painted with some light grey before being attached.

This is actually an "alternative fact" (phrase of the week), as most of them were foolishly not painted after being added to the layout...