I worked my way around from front to aft doing all the joints in sequence, and eventually I had all the top done, all the verticals done, and the intermediate horizontal timbers which are for fixings for cupboards etc.
As you can see in the above photo, the next thing was to fit a horizontal along the bottom of the frames. More half-laps:
That was soon glued and pinned:
Those joints are blind, deliberately, because I don't want end grain exposed externally, and the under-edge of the frame is going to be exposed to water splashing up from the road. Well, almost. It will have a cover strip over it, fibreglassed, but should any water penetrate I wouldn't want it to find end-grain. It was a big moment detaching the frame from the pattern, involving a few goes through a mental checklist.
Time for some ply. As I said, I have bought poplar ply for this job, and I have been very impressed. However, there are some quirks. Firstly, it is 6.2mm x 1220 x 2500 in size. So, 1/4" x 4 feet by 2.5 meters......a weird (and typically British) mix of metric and imperial. Secondly, it's not square!
Ho hum. That just means careful checking on the bits where right angles are required. I clamped 2 sheets of 6mm together, and clamped the pattern on top:
After marking out, I found my most rarely used tool, the jigsaw, and cut out roughly:
The off cuts show the quality of the ply:
Yeah, it's not prime birch ply, but it weighs about half as much as birch, and is definitely not too shabby:
I then cut out the back ends:
Next, I did some very careful setting out, with the straight edge at the bottom being the reference from which everything is set out:
I then glued and pinned it in place:
.......and rough-cut the door. Not TOO roughly, as the offcut is a big piece of ply which I'd like to use later on:
Sorry, that photo is sideways. This is better:
But Mike, I hear you all cry, the ply doesn't reach the bottom of the frame!
Patience. All will become clear. Once the glue was dry, I went around with a flush trimmer, and produced the final shape for most of the wall:
My half-laps had worked OK:
The trimming went pretty well, but it's not my favourite thing. One slip of the screaming monster and you ruin both your template and the workpiece. I stood it out of the way to get on with the next thing:
I took some 150x19 nominal PAR (145 x 14) and thicknessed it down to 12mm thick. Out came the router again, this time with a winged cutter to do a rebate on the edge of the boards. Honestly, I hate the router, and have used it more in the last week than in the whole of the last year:
That rebate is the same depth as the ply.