How to riffle shuffle and bridge a deck

A table riffle splits the deck in two, bends the halves up with your thumbs and lets the cards fall so they weave together. The bridge is the finish: you arch the woven deck and let it relax so the cards cascade back into one pile. Learn a clean riffle first, keep the bridge bend gentle, and practise on a soft surface so you don’t wreck your cards.

What is a riffle shuffle?

The riffle is the shuffle most people picture at a card table. S. W. Erdnase describes it in The Expert at the Card Table (1902) as shuffling on the table by “springing the ends of two packets into each other,” and notes it was “by far the more prevalent method in use among regular card players” in his day. It’s also called the dovetail shuffle.

Casinos favour the riffle because it keeps the risk of exposing cards low. For a magician, it matters for a different reason: everyone recognizes it as a real, thorough mix. When you shuffle like someone who has handled cards for years, people relax and trust the deck.

What do you need?

• A deck that isn’t precious. Learning the bridge bends cards. Use a practice deck, not your favourite collector’s deck.
• A soft surface. A close-up mat or a clean cloth protects the edges and stops the halves sliding around.
• Clean, dry hands. Oil and moisture make cards clump, which spoils the riffle.

How do you do a table riffle?

1. Square the deck on your mat.
2. Split it. Lift roughly half with your right hand and set the two halves side by side, with the inner ends close together.
3. Take your grip. Thumbs at the inner edges, middle fingers at the outer edges, index fingers resting on top of each half.
4. Bend. Press down with your index fingers and lift the inner edges with your thumbs, so each half bows upward slightly.
5. Release. Let the cards slip off your thumbs a few at a time, so the two halves fall and overlap slightly where they meet.
6. Finish. Push the halves together and square up, or go into the bridge.

Aim for an even, steady release rather than speed. Big clumps falling at once mean your thumbs are letting go too fast. If cards slide out sideways, your grip is too loose.

How do you bridge the cards?

The bridge turns the riffle into a satisfying finish. The cards arch up and then pour back together in a cascade.

1. Keep the weave shallow. Halves that only overlap slightly have room to slide together. Deeply buried cards fight you.
2. Get your hands deep. Lift the woven deck so it sits well into your hands, resting near the base of your fingers.
3. Thumbs on top, fingers around the front. Your thumbs press on the centre of the deck while your index fingers curl over the front edge.
4. Make the arch. Bend the sides of the deck down so the middle rises into a gentle arch. You’ll feel the tension in the cards.
5. Let it go slowly. Ease off the pressure and open your hands gradually. The cards cascade and weave back into one pile.
6. Square up. Tap the deck square on the mat.

Riffle, bridge or overhand: which is kindest to your cards?

Shuffle	What it does	Wear on the cards
Overhand	Small packets pass from hand to hand	Gentle
Table riffle	Two halves weave together on the mat	Gentle if the bend is light
Bridge finish	The woven deck arches and cascades together	Hardest on cards, especially with a deep bend

Erdnase had little patience for players who couldn’t shuffle “without bending, breaking, exposing or in some way ruining half the cards.” The modern fix is simple: keep the bridge light so the cards spring back flat, and save your hard practice for a working deck. Our guide on how to look after a deck of playing cards covers breaking in a new deck, storage and when to retire one.

What are the most common mistakes?

• Bending too hard. A deep arch creases cards. A gentle curve is enough for the cascade.
• Weaving too deep. If the halves overlap too much, the bridge stalls and cards bend.
• Rushing the release. Let go slowly, or the cards drop in a heap.
• Practising on a hard table. It nicks edges and lets the halves skid.
• Changing your shuffle mid-trick. Shuffle the same way every time, so a careful shuffle never looks different from a casual one. If you’re still learning how to hold the deck, start with our card magic basics.

How many riffles does it take to mix a deck?

This one has a famous answer. Mathematicians Dave Bayer and Persi Diaconis showed that about seven good riffle shuffles are needed before a 52-card deck is truly mixed, with the cards only starting to become random after five. Fewer than that, and some of the deck’s old order survives. For card games, shuffle seven times. For magic, it’s a handy fact to know when someone wonders whether your shuffle was fair.

Which deck should you practise with?

Any standard deck in good condition will do. A couple of options in stock now:

• Bicycle Tiger Playing Cards are built on Bicycle’s durable cardstock with the air-cushion finish, made for smooth shuffling and handling.
• Smoke & Mirrors 1984 from Dan & Dave is a limited casino edition inspired by 1980s casino decks, from a series known for its handling.
• For the classic text on table riffles, the free ebook of The Expert at the Card Table is still worth reading. Some of its card-table language is old, but its focus on uniform, natural handling still holds up.

Browse all our playing cards when you need a fresh deck for performing.

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