The problems I see with that roller is no adjustment to keep the top roller up off the leaf as it rolls . That roller has to be up off and away from the wrapper leaf . If it lays on or hits the wrapper leaves while rolling, that mat rolls against the part of the leaf as it is going in and wrapping the cigar .
I am also wondering if the roller will stay straight across as it rolls and does not go sideways making a od shape cigar .
I don't know for sure, but I think it's only intended to apply the binder. It's been my experience though, that with Bob's method, you do get a petty good "wrap". King roller had an identical machine that takes cigarette papers and they feed in perfectly.
I think there isn't friction against the wrapper/binder. It seems to be more or less rolling-out
onto the wrapper/binder
My contraption build failed because the top/rear portion of the fabric squishes the bundle of tobacco. I need to raise the point where it's attached to the back of the board. I also learned that an easy way to adjust the ring gauge is not to adjust the slack on the bag/fabric, but to use a different size dowel.