I was not into trains, my sons and their obsession dragged me into it. So the first table we built did not work so well (derailments on areas we could not reach etc)
. So we did some reading learning and we came up with a better way. We did not end up with a masterpiece, but we had a lot of fun. The boys have as much fun video taping as running them.
http://www.youtube.com/watch?v=dbDJDfI7wVE

http://www.youtube.com/watch?v=dbDJDfI7wVE