Thank you Mark I haven't really done windows before
except maybe the boulogne Etaples with proper frames.
I feel quite smug with my choice of 2mm plexiglass as it looks double glazed. It is so superior to acetate in clarity and scratch resistance. It is actually a pleasure doing these as it is far less finicky than the frames were and the templates I made to do those serve very well to draw an outline on the plexiglass.
These look as clear as my Portgarth
I've only over filed one so far and I made that into a smaller window elsewhere.
No glue!! just tight fit and no smudgy mistakes