The Crossed-Arm Factory is a
variation of the three ball Factory pattern in which the carried ball is
dropped and caught by the same hand, resulting in a crossed-arm position at
the end of each cycle. The trick is more dynamic and complex than the
regular Factory, making for a more impressive pattern, though this is offset
by a greater overall difficulty.
To being learning the Crossed-Arm Factory, start with one ball in each hand. Cross your dominant hand over your non-dominant hand and then raise your dominant hand vertically so it is around chin-level. Drop the ball in your dominant hand and then quickly swing than hand around and under your non-dominant hand, catching the dropped ball.
As shown, practice this on both sides. To add in the third ball, start with two balls in your dominant hand and one ball in your non-dominant. Make a vertical throw along the center of your body from your dominant hand, and then follow it up with a second vertical throw from your dominant hand along the outside of your body on the dominant side. This will clear space for your dominant hand to catch the center ball it threw. As that second ball is thrown, you are going to take the ball in your non-dominant hand and raise it up vertically in the air such that it remains horizontally aligned with the thrown ball. As that thrown ball reaches its peak and begins to descend, you are going to cross your dominant hand over to the non-dominant side of your body and make a mostly vertical throw. This will clear space for your dominant hand to catch the ball descending along the outside of your body. While this is going on, you are also going to take your non-dominant hand, which should have followed the outside ball to its peak, and move it horizontally to the dominant side of your body. So far this has all been identical to the regular Factory.
To recap, your dominant hand has crossed over to the non-dominant side of your body and made a throw, while your non-dominant hand has been raised in the air and crossed over to the dominant side of your body. As the ball thrown from your dominant hand reaches its peak and begins to descend, you are going to drop the ball in your non-dominant hand. The ball that was dropped and the ball that was thrown should now be descending alongside each other. After making the drop you will swing your non-dominant hand around and under your dominant hand, catching the dropped ball (as was done in step one). At the same time your dominant hand will make a vertical throw along the center of your body, clearing space for it to catch the ball it threw. This catch and the catching of the dropped ball should happen at the same time. The center ball will then be caught by your non-dominant hand.
As shown, practice this on both sides. For the final step, you are going to uncross your arms after the simultaneous catches at the end of previous step are made. As the center ball descends you will make a vertical throw from your non-dominant hand along the non-dominant side of your body, clearing space for that hand to catch the center ball. The outside ball will then also be caught by your non-dominant hand.
Once again, practice this on both sides. Notice how the last two throws (the center and outside vertical throws) of the previous step are mirror images of the first two throws. To perform the full trick, simply raise the ball in your dominant hand up so that it remains horizontally aligned with the outside ball thrown from your non-dominant hand, and then repeat the the same throws and catches of the previous step with your hands reversed. The Crossed-Arm Factory, because of its odd ball drop, will take some time to perfect, though the core pattern itself is fairly easy to figure out.