Freelance 2015-1

[shortliner]

Mark - the circular layout is actually a figure 8 folded inside itself - the train is of a length that is just short of meeting itself on the diamond, and circulates quite happily - there is a video on the net of it doing just that but I don't remember where
EDIT:- see <!-- m --><a class="postlink" href="https://www.youtube.com/watch?v=wXvVTodbHbY">https://www.youtube.com/watch?v=wXvVTodbHbY</a><!-- m -->