Grettings...Im designing a rotomoulding machine, i would like to ask a gearing issue..as you can see in the video, this kind of machine has a biaxial rotation arm, and im pretty sure is geared to obtain this motion with bevel gears, but im not sure of the gear design itself...is a simple 4 bevel gear configuration? if needed, how do you control the rotation in the 2 axes? Do you need to put another motor in the tip of the arm? Thanks for your sugestions and ideas.