I printed the Zombie Hunter Head (http://www.thingiverse.com/thing:69709) from Thingiverse at a resolution of 0.1mm. I used Simplify3D to slice the file with:
-5 Solid Top Layers
-4 Solid Bottom Layers
-infill of 20%
-Ext Temp 233
-Bed Temp 88
I am overall really happy with the quality of the printing except when it comes to the solid top layers of the model there ends up being these holes that can be seen in the photos.
Any idea on what is causing this and what could be done to fix it?