Cost calculation does not work with hollow objects.
See also: https://facebook.com/photo.php?fbid=1056483367824759&id=100003893188141&set=p.1056483367824759
Some STL files are broken and produce broken slices. See also: issues/7
For know there is a workaround: service.netfabb.com
Assuming this is related to broken normal's in the STL file:
https://stackoverflow.com/questions/44887696/repair-normals-on-possibly-bad-stl-files ...
https://drive.google.com/file/d/1Uj5AazI7MZlGHSBlgsTQ2jfGEEaVd67p/view?usp=sharing
solid stl issue resovable usign netfabb on line but see first bug if set layer slider to other level first level are ...
I have try to slice .. but it cant finish slice the whole model.. maybe connection issue.. look like it has issue
slicing stl file that is over 1000 layer