Ernesto,
I think creating the 3d cube as in Part 1 was pretty straightforward, and I can see that making the animation afterwards was more complicated, in the sense there were a lot of repeated steps, with a few interventions at certain points, but like any problem, breaking it down into small chunks makes it easier to handle.

I didn't start at a blank screen with the whole sequence of steps to a finished animation in my head, I just started with XaraX, made only three shapes and copied them to X3D, then played with the Rotate2 animation to rotate the faces to fit together. I knew that would work, because I had played with similar ideas before.

I was a bit more concerned about getting the faces to show properly, without interference from the other shapes. I hoped a suitable combination of Extrusion and Bevel would work, but I wasn't sure of it. It worked practically at first attempt, so I had a 3d Die almost immediately, and I could drag it around freely on screen. I nearly posted it then, because it was getting late in the evening, but it seemed to me I could animate it by manually rotating it by fixed amounts and pasteing the images into XaraX, so I started doing that, then I hit a problem with the wrong dot faces appearing, because my 3d die wasn't a true die, with opposite faces adding up to seven, my 3d die had opposite faces sharing the same number, so I went back to XaraX and made the rest of the faces, and as each new face came into view, I replaced the relevant shape with a new one, as detailed in the Part 2 tutorial.

So you see, every step was a simple one, and built on what I already had, and at least with the animation, was mostly just repetitive slogging away, with a couple of hiccups solved on the hoof, as it were. I didn't know it was going to work, I just tried it to see how far it would go, and happily it worked out fine. If it hadn't, I would have posted just a static image, and if that hadn't worked, I probably wouldn't have posted at all, or more likely, tried something else first.

Hmmm, that was a long sermon, I didn't mean to preach, but the basic point is, don't be afraid to experiment, you never know what might happen, or what you can achieve along the way, and above all, have fun!

Mike