Oil and Water

Oil and Water is a classic plot in card magic where a small group of red cards are intermixed with a group of black cards. The black cards (representing oil) magically separate and assemble at the top of the packet. This is usually done a number of times.

This effect was noted as a Card Problem by Hofzinser¹.

The premiss of this effect was first published by Walter B. Gibson in Jinx as Like Seeks Like (issue 91, November 1940). You need six cards, you use the Glide and you don't openly alternate the cards.

The Oil and Water theme and presentation was created by Ed Marlo, who also developed many methods for the effect, published first in The Cardician and M-U-M (1953).

Variations

• Oil & Water Climax from Ibidem N° 8, december by Ed Marlo (1956) have a sequence in which oil and water mixed.
• Oil and Queens from The Devil's Playthings by Roy Walton (1969) adds a kicker where the one set turns into the 4 queens.
• Camouflage from Packet Switches (Part Two) by Karl Fulves (1973) added a climax where all of the cards became the same color.

References

• ¹More self-working card tricks By Karl Fulves page 22.