OK, my fellow 2.35 forum aficionados-
Awhile back I decided to go Cinemascope, and was inspired by Vern Dias's DIY 2.35 curved screen. I added my own twist by incorporating a motorized masking system. For my room, I settled for a 112-inch wide screen.
Essentially, building the screen was pretty straightforward. I constructed a frame consisting of a couple of 2x2's, MDF, and brackets of assorted lengths. The "rise" is about 6 inches from the center.
The 2.5 inch wide MDF is very bendable, and became the top and bottom pieces to which the duck canvas was stapled to.
After the frame was built, it was time to staple the duck canvas to the frame. Starting at the top, I was able to get the canvas secured to the MDF stapling every 3 inches or so. Once that was done, I then stapled the bottom side.
It is recommended that the sides NOT be stapled, otherwise the fabric will tend to flatten out and not follow the curve.
I then painted the screen with Behr Bright White latex paint. This helped tighten the screen by shrinking the fabric somewhat. This took 3 coats to acheive adequate coverage and uniformity.
Here are some pics of the construction.