How do you build a scale looking frame for your 'bubble' plastic canopy? Building a jet (SU-27)and have the clear plastic canopy which I had to order from Italy, so replacement is difficult if I screw it up. The full size has a 'flange' arrangement around it. The hinged portion has the flange which rotates upward as the canopy opens. Aluminum-litho plate- is the only thing that comes to mind to hold the shape. I guess almost all jet canopies are similar, any ideas or 'How-to' articles you know of? Bill S.