[Runscott]

When I pull the card out of the water, after rubbing off residue, I always dry it with typing paper. I use typing paper because it is flatter than a paper towel or anything else. Place the card on a piece of typing paper, then place another piece on top of the card, hold it in place and rub your fingers over the top of the paper - nothing moves except your finger. Keep changing the paper until the last piece is not absorbing noticeable water. Then take a clean sheet and place the card on one side and fold the other side over the card, then place the paper and card in a book that you don't care much about, because water will seep through the paper as it dries, and warp the pages of the book. Then pile on more books - lots of them.

Anyway, that's what I do.