Stack

A stack is a multiplex throw where all the objects are thrown to the same hand (not necessarily the same hand that threw them), typically done so that the objects are "stacked" vertically in the air. In a self stack, all the objects return to the hand that threw them, and in a crossing stack, all the objects cross over to the other hand.

A cut multiplex is a stack where one of the objects is caught and thrown again before catching any other objects that were part of that throw. A cut duplex is written in siteswap notation using either two different odd numbers ( e.g. [53], [73], [75] ) or two different even numbers ( e.g. [64], [84], [86] ). A non-cut duplex stack is written using two of the same number ( e.g. [33], [44], [55] ).

A non-multiplex pattern can be made into a multiplex pattern using twice as many objects by making every throw a duplex stack (non-cut). Any composite number of objects can be juggled in a multiplex pattern similar to a basic non-mutiplex pattern by throwing the same kind of stack for every throw.

6 ball duplex stacks Siteswap: [33]	6 ball asynch cut duplexes Siteswap: [42T] or ([64],2)*	6 ball synch cut duplexes Siteswap: ([42T],[42T]) or ([64],[64])(2,2)
8 ball asynch duplex stacks Siteswap: [44]	8 ball synch duplex stacks Siteswap: ([44],[44])	9 ball triplex stacks Siteswap: [333]
10 ball duplex stacks Siteswap: [55]	12 ball duplex stacks Siteswap: [66]	12 ball triplex stacks Siteswap: [444]

World records

Stacked multiplex world records with publicly available video evidence:

• 9 ball triplex stacks: 10 stacks caught by Bruce Sarafian in 2007 (video)
• 10 ball duplex stacks: 68 stacks caught by Alexander Koblikov in 2010 (video)
• 12 ball duplex stacks: 6 stacks caught by Bruce Sarafian in 2009 (video)

Unverified claims:

• 6 ball duplex stacks: 15 minutes by Bruce Sarafian (claim)
• 8 ball duplex stacks: 2 minutes and 5 seconds by Bruce Sarafian in 2008 (claim)

Koblikov 10 balls pirouette !!!

10 ball stacked 10 up 360 by Alexander Koblikov