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Rough and Smooth
Rough and Smooth is a principle in magic in which cards coated with roughing fluid cause them either temporarily stick together or slicker then the others.
The use of roughing fluid on playing cards is one of the greatest innovations for self working card magic. Used first by gamblers for the quick location of the Aces and known in a gambler's supply house catalogs as "Slick Aces" for making cards slippery than the other cards in the deck.[1]
Applying this principle to card magic was create by Ralph W. Hull. Howard P. Albright stated "The outstanding importance has been Hull's 'Nu-Idea Discovery' — a basic principle opening up an entirely new range of perplexing problems heretofore impossible." [2]
Joe Berg also created many Mechanical Decks using this principle.
Decks
Books
- Rough Stuff by Joe Berg (1956)
- THE ROUGH AND SMOOTH PRINCIPLE in Greater Magic (1938)
