Zeta Flow

Cool Trick: As shown in my "720 degree spin" level, you can make pieces rotate repeatedly but eventually turn around. If the min and max angles have a difference of at least 360 degrees, thay will turn that many degrees and then stop. You can make some interesting patterns this way...

I believe I've done something like that in my level Orbital Core Destroyer.

Also, in some levels I have seen pieces rotate then stop. I am guessing this has something to do with it, but no matter what I try, I can't seem to get it to work. Does anyone know how to make it work?

Try this:
You can also make the rotation pause for a specified time.
Read more about it from this thread.