this would work beautifully. I personally use the foam poster board. I use an old rotary blade to cut them into the size I want and then fold my fabric onto them.

I don't want the longer boards they come on in the store. I want shorter/stubbier ones. Approximately 10x8. I double fold my fabric and then onto the boards they go. They might be fatter when wound up but then my shelves don't have to be so far apart, either. Nice option for anyone who's shorter. Which isn't me, but it helps not having to stretch so far ;)