Many players have learned how to successfully cheat at the game of poker. One such cheating method is mastering the art of stacking the deck. To master this skill one has to be good with sleight of hand. This is done by a special way of holding the deck of cards that allows the deck to be manipulated, or stacked, one of these special ways is called the Mechanic's Grip.
To help you better understand this cheat, pick up a deck of cards as if you were getting ready to deal. You will probably be holding the deck in the palm of your hand, with your thumb on top of the cards, and your other four fingers on the side of the deck. When dealing cards, you use your thumb to push one card onto the tips of your other four fingers. The thumb is then used to hold this card in place, until your thumb and pointer finger of the opposite hand grabs it and deals the card out. Many poker players deal this way, even though they probably have not noticed it or put much thought into it.
To form the Mechanic's Grip, move your pointer finger and middle fingers to the short side of the deck, farthest away from yourself. With this grip, more of the deck is covered by your hand, making it harder for the other players to see what you are doing. This grip is the basis for many cheats, such as peeking (the dealer will either push one corner, or side of the top card, away from the rest of the deck so that he can see the top card), bottom dealing (dealing the from the bottom of the deck instead of the top), and second dealing (dealing the second card in the deck instead of the top card, usually when the dealer wants the top card for his own hand). By using the peek, the dealer will be able to keep track of what cards each player gets, he can also setup his own hand by combining the peek with second dealing. Knowing what cards the other player has in his hand gives the dealer an advantage when playing his own hand, because he will know what cards he needs to beat the hands of the other players.
In another version of the Mechanic's Grip, the deck is held with the thumb on the top, the pointer finger around the front edge, the pinky around the back edge, and the two middle fingers under the bottom of the deck.
Using this cheat can be very effective for the dealer, as it can definitely help him stack the cards in his favor.