Ok,
I'm REALLY confused here - having trouble with a koch vase I found on Thingiverse - the STL i downloaded has some issues when rendering with skeinforge (the 2 shells never touch). So the designer uploaded a different version of the STL which is completely solid. I suspect I this file will render better than the other version of the STL, but I can't for the life of me figure out how to disable solid layers!
I found the solid-surface-thickness setting in fill which I have set to 0, but now it renders the vase with no top or bottom, instead it's the outline of the vase only! Is there an additional setting to assign the number of bottom solid layers?