For this build, I am using my tried and tested method of ‘egg box’ construction using 5.5mm ply. They won’t be true egg boxes, because, as this is an around the room layout, the boards themselves will be quiet narrow with the widest being about 16 inches, so no additional lenghtwise supports are needed, just the front to backs every 12 inches.
The sides are made from 10cm (sorry to mix metric and imperial) widths cut from WBP 5.5mm 4ft x 2ft boards. Inch square battening is used at the vertical joints with everything glued and screwed together. Holes have been drilled to allow cabling to be passed through.
As with all my baseboards, they only get accepted for use if they can support my weight and I’m pleased to say that the first batch passed with flying colours. I took some pictures as I was building the first boards but now can not find them. Here are couple of snaps showing a constructed board.
The boards are being joined by dowels and catches. One board each for the station, the north side including the MPD, the west side (which will probably be hinged to allow access and the south side including the carriage sidings.