I wil be using if for b&w shoots. I now use a light box (for slides) but the amount of light is not adjustable and it is flat. I would like to have it curved and going up at the end.

I'm not sure if I heat the plexiglas up and bend it, that it will get wrinkled in the curve that is visible when i want a white background.
Or the curve must be that large that it will not happen...