So, the last year or two, I've been talking about pulling out some of my old O-gauge stuff, and setting it up under the Christmas tree for my son. I always think of it too late in the season to do anything about it, and may be in the same boat again this year... but at least I'll kick it around, so that I can be ready for next year, should I not get it done this year. We get a large tree each year, roughly 10 feet tall x 6 feet diameter, so I could fit a small platform under the tree. Also, since we're putting the tree stand on an old wood floor, there's always concerns with a tree pan leak or spill ruining the floor (can't get under there to wipe up any water that does spill), so the platform will double as floor protection. Here's the rough layout I'm considering, with four tracks (two loops + two sidings), for control from my vintage Lionel Trainmaster (4 channel) controller. The tree is placed in the corner of a room, which is why have the platform squared on three corners, and radius'd on the corner facing out into the room. Construction will be 3/4" Baltic Birch ply (comes in 60" x 60" sheets), and the tree will be elevated on a smaller platform a few inches above the main platform, with the track passing under the tree stand plataeu, as tunnels. The big green "+" represents the legs of the tree stand, whereas the green circle is the rough placement of the plateau on which the stand will sit. I'm hoping to use fake stone walls or build hills up to this plateau, sitting maybe 5" higher than the main platform. Ideas? Criticisms? It's been a long time since I laid out a train platform (I was probably 12 - 13, last time I played with these things), so I don't even remember how I used to synchronize speed control circuits at the switches.