I think you can use regular sized paper, just have to tape the sheets together.
edited to add: Ignore what I said about taping sheets together, I downloaded and printed the pattern from this site, but think it was shrunk to fit 8 1/2 X 11 paper. I will have to go on a hunt to see where I filed it.
Last edited by elnan; 07-22-2015 at 07:39 AM.