Mike
Showed my contract metal shop the pictures here.
They have suggested using a 90 degree aluminium strip ( foldit up) and rolliing it and using slight pressure by hand. They build metal collars this way and felt you could easily do it with basic tools.
The drivers side screen measurements are;
15mm x 15mm x 90 degrees material used. 480mm wide (long).
75mm - 80mm to top or arc of frame from base line. (Make sense - this is the arc you draw).
Use 5mm stainless button heads at 80mm centres for base and 3 of same to attach screen to screen.
These measurements are off my neighbours MGA and the way he has attached his. Just in case you want to use a drivers side only screen. I like that idea. Thanks for the thought.
Good to see they may find a class for us. If not we make the most of a Wednesday, Thursday track hire for ourselves.
Cheers
Bernie