This large vase printed in 34 hours 12 minutes with a layer height of 0.200mm.
I sliced it with Simplify3D and had no problems with printing other than a fair number of hairs. I used a hair dryer and a little sandpaper to get rid of these .
I have done a number of experiments involving retract length, retract speed, Z-lift, and varying temperature, and it seems that it is just not possible to eliminate hairs with a Bowden-tube style printer.
You can get the STL File for this part here:
http://www.thingiverse.com/thing:1020197
or here:
https://pinshape.com/ite.../10372-3d-pr ... piral-vase