In Response To 'Re: Re: An Array of Cuboids'
Graphics3D is just a means of displaying a collection of graphics objects.
I am not certain this would work, but perhaps you could try initializing a counter, creating a Button in Mathematica that would use the value of the counter inside Show[Graphics3D[...]] and then increment the counter. If this worked then the next time you pressed the Button it would use the incremented value of the counter and display the next step of your construction.
I have not tried this, I don't know that it will work, I don't know enough about what you are trying to do to be able to test this, but this was the first (or second or maybe third) thing I thought of when trying to come up with a simple suggestion for something you could try.