A limited amount of pre-building is permitted prior to the competition. This is basically 6 pre-built buildings, locos, structures or scenic elements, track laying and ballasting on 2 of the boards and construction and base coating of back scenes. Everything else needs to be constructed on site.
We chose to build 2 rockets, the station, listening dish, rocket shed and warehouse as out pre-builds. We shared this out amongst us, so that no one built more than 2 of them.
We arranged a number of design and tracklaying sessions, so that all track had been tested and ballasted prior to arrival
Once we had laid the track, we wired it and soldered brass nails in at the baseboard joints to improve track alignment.
Here's a few photos taken during the early build stages.