Jim Leisenring used to do exactly as WarrenP describes, only with 3 X 5 cards. He, and I, make them from waxed silk thread and various furs. Once twisted up and stored on the cards, the wax stiffens nicely so the "dubbing brushes" don't come apart so easily. Very nice to have a way to make a perfectly tapered body right at hand when needed.

REE