I know this is an old-ish thread but there are new motorized screens being bought everyday, the latest one being mine which is a 150" 16:9 non-tensioned screen.
Now contrary to what's out there, the screen i've got has very very minimal waves and infact once the projector shines, they're not to be noticed at all - even in pan shots. But i know the inevitable will happen, so am looking for some advice:
1- Since its a fairly large screen it almost extends width wise in the room with about 200mm on each side, that's less than a foot.
2- I don't want to do the extensive tab tensioning job that the OP has done because i've paid for this screen (lol) and really its not bad - so why fix it .. but i want to still tension it to get those ripples away and get it to not wave in the months to come ..
3- I was thinking, without disturbing the screen itself, what if i put elastic cord on the two side walls which pretty close to the screen's width edges .. and then once the screen is down, i put clips through the cord that then stretch and attach to the side of the screen - at equal positions on both sides - as the same order where the top and last clips extend more, middle ones less. Or i can use velcro tabs that attach to the screen's rim (i can put the smooth velcro adhesiveon the screen's rim, and attach the hooky side from the cord to tension it).
4- This should have an effect of the tab tensioning - just that its a manual process and does not roll away with the screen - once i un-clip it (or un-velcro it), the cord goes back to the wall and the screen can roll up.
Can anyone point out the pros n cons so i have a better idea and can think accordingly?