David continues:

Once the fixative has dried the various door and window spaces can be carefully removed and the elevations cut out. This process and the various stages in construction are shown in figs. 26-39, below.

Doors and windows were printed onto glossy photo-paper, cut out and glued behind the appropriate apertures. It was not possible to produce transparent windows, so the glass was coloured navy-black, and in some cases, notably the platform and front elevations of the buffet where illuminated from within, these were copied straight from the photographs.