Print in place Iris Orb-box

This is a small, print-in-place iris box with no supports required.

This was originally posted on MyMiniFactory in early 2018 and I have now moved it here as well. I have designed many other iris boxes which you can find on my design page: https://www.thingiverse.com/BrienAllison/designs.
I also have other designs which you can find on my MyMiniFactory page: https://www.myminifactory.com/users/Brien%20Allison.

This design is similar to the well known designs of Emmett and Lobo CNC in that it is a print in place iris box, spherical in shape with four 'petals'. It differs from these designs in that it prints upside down, with the base facing upwards. The shape of the opening is also wider and covers almost an entire hemisphere; hence the name Orb-box.

It is quite challenging to print however, probably moreso than the other designs. For this reason I have included a test file 'Orb-box test' which has all of the challenging print in place features included on it. If you can p