Round 2. The GWR PW hut which Phil sent me in a plastic (non-retail) bag.
Here's the parts...
Worth noting that the four ribbed parts and the four sides all have front and rear faces. The front faces have detail lines marked on. Also note that the tabs of the front side with door in are also handed and different to the rear side. Worth doing a dry run first.
Turning to the side with the large window, there's a frame that fits on the inside. This gives a lip for the glazing to fit up against.
There are cut outs in the top of the inside frame. These accommodate the roof trusses. Worth making sure they fit before the glue goes off on the frame.
So, having done that bit of prep, the ribbing sections were glued to the respective walls, checking alignment carefully. The four wall units were then glued into the base and the three roof trusses fitted into the wall notches. You very quickly get to this stage.
The next stage was to fit the two roof panels. I couldn't get the roof to join at the top as the pieces overlapped rather than butting up. I did try various different orientations and far as I could tell, they were identical and the slots were not handed. I did resort to cutting a smidge off each roof panel to get the ridge to sit flat.
The photo below shows the window frame temporarily fitted without the glazing behind, the door just placed and also the two roof capping strips just placed on. The various lose parts will be removed for painting.
Took just less than 30mins to get this far.
I could do with trying to find some prototype photos to see what the roof finish was. I'm wondering if a layer of paper over the roof might be suitable and help hide the tabs and slots. Can anyone point me in the direction of a nice period photo?