This is the Trick you will learn

I will show you how to cut the ropes to the correct lengths … and …

how to perform the trick.

First you must choose the lengths of the ropes:

You must use the same color for the short and long ropes.

You should use soft easily bent rope.

The shortest one must fit your hand – loop the rope so that the ends extend slightly above your closed hand and the rounded loop is totally contained in your fist.  Only the ends are visible to the audience. – the length of about  5 inches

The middle length rope can be any size – the best length of about 9 inches

The longest rope is cut to make the trick work – the length of about 14 inches

This long rope length must satisfy this equation:

Middle Rope length = 1/2 (Short + Long lengths) + Delta      where Delta is a small Smidge

Put attractive (distractive) duct tape on the ends to discourage fraying

and you have all you need to do the trick.

The only manipulation that is required is the exchange (swapping) of 2 rope ends.

( the hanging end of the short rope and the held end of the long rope)

This move is hidden from the audience by your (right) hand getting in the way.

The swapped ends produce a loop with the long rope passing through it.

Practice in front of a mirror.

Make the swap a smooth rolling motion.

Half the fun is exposing the trick to a surprised audience: