With Acetone Vapor Treatment
This 3D printed cellular cocoon vase was printed in ABS at 0.15mm layer height. I kept the print speed pretty slow due to all of the details and overhangs, so this took about 24 hours to print.
After printing, I treated the whole thing in an acetone vapor bath (using a large deep fryer and a version of the method outlined by Austin Wilson and Neil Underwood here.)
A time-lapse video of the print can be found here.
The model can be found here. Model credit: Dizingof (aka Asher Nahmias)