One of the best things about belonging to a club, is the gathering of like minds. It is the place where others will appreciate your joy at finding something in your prototype, or the completion of a cleverly named structure model.
Each person brings a skill set, some bring several skill sets. In our case, we begin with a concept. The staging yard comes to mind. Where to put it? How does a train get there and back? Ideas, questions, solutions, debates about solutions. Carpentry, track, wiring.
Sometimes we burn out on a project and work ceases. For a period of time a project languishes, unseen by the active mind of a member or the group. At some point, a spark reignites desire, and the project surges forward.