I make a Clock with 3DMax  composed of some other child Objects ,something like minute hand, second hand and so on , and I need an animation that let the Clock disappear gradually by decrease of its transparency.

then if I rotate the Clock while it is  in the process of disappearance , the total rotation degree is no more than 90. the  Clock will be blinking. sometimes minute hand is in front of second hand ,and sometimes second hand is in front of minute hand.  Why is it blinking ,  does the zbuffer still  work with transparency objects ?  or the zBuffer precision is not enough?

how does JPCT draw with many Objects some of which are transparency and some are not ? does we need to  sort these objects with  z coordinate ?

Thanks