Himself has been carrying on with the fence installation around the S bend, all the while muttering that he takes pity on the contractors who had to do it for real all the way down from Rhyd Ddu to Porthmadog on Phase 4.
You'll notice that due to the location of the board joint the fence line on the upper side of the line, in the middle of the picture, will have to be broken with a stand-alone section on the other board.
As you can imagine these fence posts are going to be very vulnerable to knocks when putting and taking down the layout, or even shifting the boards around in storage.
So Himself has cunningly strengthened the ends ones by securing them in position up against a length of piano wire. (He never throws useful things away even when retired!)
What's not so smart is that he's also realised that when the fence line marches up over the high edges of Cutting Mawr the board will most likely no longer fit in the face-to-face storage racks.
So fine were the tolerances that those couple of centimetres will make all the difference.