Permanent wiring for the main line is complete, and trains are running! I'm happy to say that test runs so far have uncovered only minor glitches in the trackwork, and these have been easily corrected.
Also up is the Masonite fascia board:
This fascia, unpainted right now, defines the edges of the railroad's "world". Everything between the fascia and the backdrop sky will eventually be covered with scenery. I trim the top of the Masonite to the contours of the terrain. This may be adjusted as the scenery progresses.
The fascia will also provide a surface to mount control panels and connection jacks for handheld throttles - these will be cut in next.