Quick and simple technique to soap a deck of cards. Use any deck of cards. Use a bar of cashmere bouquet soap. Make an x mark on the back of EACH card using the soap. Shuffle several times in different directions and spring the cards to spread the soap better. Lay all the cards in the table to check smoothness. Try this easy approach to soap a deck of cards and see how smooth you can use the cards. Find other tips at Gary Ouellet's book, "Close Up Illusions".