To be able to rotate six balls in one hand at once, you need - depending on the size of your hands - small balls of about 35 - 45 mm.
a. The big triangle:
A big triangle can be rotated with six balls. The first three balls are held just like the small triangle with three balls shown in "Practising with three balls". Then you place the next three balls in a row on one of the sides of the small triangle.
b. The double propeller:
The second possibility to rotate six balls at once, is to form two rows of three balls as shown in "Practising with three balls". Both rows should remain absolutely parallel and not break in.
c. The hexagon:
The third possibility to rotate six balls at once, is to form a closed chain to the figure of a hexagon. It is very hard to hinder the balls fom collapsing towards the centre.