Jan, the inside of the O scale layout is going to eventually become the Hornby O gauge clockwork layout. Access to it is the old tried and true crawl method because (1) I'm starting to get tired of standing for long periods so I lowered the layout with 36" legs, okay for a chair at times, (2) swing out sections whether up down or sideways don't seem to work out well for me in the long run, and (3) I couldn't think of anything better and was in a hurry as usual "cause there's a half finished boat model that hasn't gotten any attention for the last few weeks plus other projects also that I'd like to work on.
Thanks Larry, was expecting that would be the case. Will be looking forward to see how you choose to install that Hornby setup.
Have a friend here, who has removed his "entrance door" as well. He didnīt like the boundries it sets for construction, as well as a few electrical issues experienced over the years.