Construction is simple, 5 hardboard panels and 12 x 21mm pine section. Each side panel is framed top and sides with the pine section, then left for the PVA to set. After some tidying up of edges I paired each side and end and joined, the picture below was taken at this point. At this point the volume occupied by a very small layout seems to increase dramatically...
Having assembled the two halves I added the top and once everything was together all the edges were sanded smooth and the timber was given a couple of coats of varnish with a rub down in between. On the top four triangular pieces of plywood are in place to hold the layout in place whilst in use.
Bolting the layout inside is achieved with four M4 machine screws locating in captive bolts underneath the baseboard, located within blocks of wood. On the left you can see that there is an additional length of stripwood within the box edge. Whilst I would like to say that this is intentional to accommodate the plug sockets that extend beyond the board edge on this side, it is more a case that I was a little too generous in the clearances within the box!