Ok, I've been putting this project off for far too long, so it's time to get started. I used the same framework idea as one other AVS member, and for me it has worked great so far. I'm not finished yet, but I can see the light at the end of the tunnel. Here are some pics and explanations and such:
In the above image, I've cut two 2x8x12s for my curved screen using a crappy jigsaw. To the jigsaw's credit, I've only ever used one twice before so it's not THAT bad, imho. I used Aussibob's spreadsheet for the calculations - the flat part is 124" long.
Ok, here I've taken the individual pieces and assembled them in my basement, as I wouldn't be able to bring the whole thing down the narrow stairs. The side pieces are angled to fit the curve. I don't know how the other guy did it, but I just laid the long curved piece on its side, then put the vertical piece on top of it at one end, then traced the curve underneath the vertical piece (damn that was wordy, but I hope it makes sense). I angled my chop saw to match it appropriately and, hey, I didn't even know my saw could do that. Again, I have very, very minimal woodworking practice. You can also see the little speaker cabinet that I put together. The curved screen was built also to allow me to put my speakers at ear level. I don't know how much of a difference it will make, but at any rate I will know I'm doing it like I'm supposed to.
Ok, here is the frame with the border added. I used 4" (which is actually 3.5") primed MDF. Again, my knowledge (or lack thereof) was put to the test. I screwed in some drywall screws and realized that they would not countersink in the MDF. Sooo, I used a countersink bit and all was well. I used clamps to hold the border in place. Seriously, I don't know what I ever did before clamps. Actually, I do, I $^&ed up my work a lot. Anyhoo, if you don't have clamps, get some (no, get lots).
Turned over, you can see I've added the Screen Tight base to the back side of the MDF. It's going to be a little tight (read: PITA) to try and pull the spandex away and up without causing a calamity because the 2x8 is in the way. We'll see how it goes.
I painted the border with flat black paint, but velvet with adhesive backing is on its way. The screen is smaller than the one painted on the wall, but it is also closer to the viewers. Once I put the screen up on the speaker cabinet, I realized I had to move the pot lights. I wanted to move them in front of the screen, but there is ducting in the way, so I had to put them behind. Who knows, maybe it will look cool??
That's as far as I've gotten so far. I am going to be tensioning the spandex tonight. Any help on how much extra length/width I should start off with before tensioning or should I just cut it to the length and width of the screen, knowing that it's going to be stretched much further anyway?