The faro shuffle is the single most important technique in stack work. When executed perfectly, it interleaves two halves of the deck one card at a time — no more, no less. Every calculation in Magic Stack Pro depends on perfect faros, so understanding this shuffle is essential.
How It Works
A faro shuffle splits the deck into two equal halves of 26 cards, then weaves them together so the cards alternate perfectly — one from each half. Unlike a riffle shuffle, which is random, a faro is precise and repeatable. This mathematical precision is what makes it useful for stack construction.
Out-Faro vs In-Faro
The faro shuffle comes in two variants, and the distinction matters for your calculations:
The Out-Faro
An out-faro keeps the top and bottom cards in their original positions. After the weave, the first and last cards of the deck remain unchanged. This is the more commonly used variant in card magic.
A remarkable property: eight consecutive perfect out-faros return a 52-card deck to its original order. This mathematical cycle is the foundation of many classic card effects.
The In-Faro
An in-faro weaves the top card of one half between the top two cards of the other. The top and bottom cards shift inward by one position. It takes 52 perfect in-faros to cycle a deck back to its starting order.
In mathematical literature, the in-faro is sometimes called a “perfect shuffle.” In the world of card magic, both variants are considered “perfect” as long as the weave is truly one-for-one.
Why It Matters for Magic Stack Pro
Magic Stack Pro uses faros as the primary building block for its calculations. When you add an out-faro or in-faro to your operation sequence, the app applies the mathematical inverse to work backwards from your target arrangement to the required starting deck.
The app assumes perfect faros — if your technique is inconsistent, the calculated stack will not match your real-world result. That is why mastering the physical technique is just as important as understanding the math. See Practicing Your Faro Shuffle for drills and benchmarks.
The Physical Technique
The faro is not a riffle shuffle. The cards weave at the corners, not along the edge. Hold one half in each hand with the long edges facing each other. The corners should just barely touch. Apply gentle inward pressure with both hands simultaneously — the cards should begin to interleave on their own. If they resist, your alignment is off. Back up and re-square.
Always start with a fresh, clean deck. Cards that are warped, sticky, or unevenly worn will fight you on every weave. Standard poker-size cards — Bicycle Rider Back or Bee stock — are the best for practice.
Do not bend the cards or force them. A proper faro is silent and smooth. If you hear snapping or see the cards bowing, you are applying too much pressure.
Learn to Faro
Youtube contains an absolute goldmine of instruction content for how to perform the Faro shuffle.
https://www.youtube.com/results?search_query=faro+shuffle
Check back often. As our app is adopted and matures, we will post more and more custom-made instructional content here.