The following techniques are used to connect and/or separate balloons. These are:
In order to tear off a balloon that is not needed any longer, tear off the balloon over the fingernail of your right (left) thumb (figure 1). Make sure that the piece of the balloon that is connected to the sculpture is secured well enough.
Figure 1: Tearing off a piece of the balloon that isn't needed anymore.
Once a piece of a balloon was torn off, the rest of the balloon that is connected to the sculpture needs to be secured (figure 2).
Figure 2: This balloon piece should be secured.
Figures 3 to 7: Knotting a torn-off rest of a balloon.
To make a pinchtwist at the beginning of a balloon, create a small bubble right at the mouthpiece. Then the mouthpiece is pulled to the bigger bubble of the balloon and held in place. Now twist the smaller bubble just as you would do for a pinchtwist (figure 8).
Figure 8: Making a pinchtwist at the beginning of a balloon.
There are two possibilities to connect a new balloon to a sculpture: On the one hand, you can knot the mouthpiece around an existing pinchtwist or on the other hand, the beginning of a new balloon can be connected in form of a pinchtwist to an existing balloon. For this put the pinchtwist underneath the twist and then turn the top of this twist around (figure 9).
Figure 9: Connecting a new balloon to the existing sculpture.
To divide a balloon at a certain point, create a small bubble between two safe pinchtwists (figure 10). This little bubble can now easily be destroyed without risk to divide the balloon (figure 11).
Figures 10 + 11: A balloon between two safe pinchtwists can easily be destroyed.