I got my Iris box (or rather, J_Hodgie's iris box http://www.thingiverse.com/thing:5589) to print well at last! allbeit with some issues (the layers don't seem to like to stick together all that well)
But, It printed!!!
I didn't print the entire base, just a ring, that way i can use it as a fan airflow control later on...
Seeing what the iris looked like at the end of the print, I couldn't help but drop a companion cube (http://www.thingiverse.com/thing:1622) through it :-)