This is a sequential iris to play with. That means all the sliders move one after another.
You get a different movement depending on which ring you hold and which ring you rotate.

The sliders move in a circular motion by following a bent track. 
 

It is recomended to print it with normal PLA for a smooth movement.

Assembly

Step 1: Remove supports and circular adhesion tabs from the sliders.

Step 2: Place all sliders in the outer most position. The single pin of the sliders is now facing up

Step 3: Align the Lide the following way: The end of the outer Track (blue circle) needs to be opposite of any of the snap hooks

             This is necessary so that all the pins will find a place in the track (green arrows)

Step 4:  Fold the lid on top of the base without rotating, so that they align and push the two pieces together.

Thanks for printing and have fun.  A follow to my profile would help me out a lot!

Please leave some feedback how well this thing moves after assembly.

I tried to optimize it a lot and want to learn more how well this design works for other filaments and printers.