Hello. I’ve just created a thing with SketchUp Make 2015 that I want to print with a 3d printer. It’s my first object created with Sketchup. I’ve exported it in .stl extension with a plugin, but when I try to get a print preview (with slic3r) I obtain a cut object as if some of the parts aren’t filled.
To make me explain better, this is the print preview with slicer:
How can I solve?