And a further film of the turret elevation and depression now being powered via compressed air delivered, for now, via a pair of syringes. The results are fairly pleasing, as the method of raising and lowering the gun-cradle without visible or audible servos has been a major headache for some 2 years.

Today I painted the 160 or so clips which will in time bolt the curved Perspex window panels to the internal stanchions and bars of the cupola, as per the original. I’ve also been assembling the various hydraulic lines, made from 3d printed curved pipes, and brass tube of equal diameter for the straight sections. Painting and fitting same should commence in a day or two. When complete the only thing left to do is to make the mould from a plug, to cast a positive, over which the hot Perspex can be drawn to fabricate the complex curvatures of the windows.