dequinox

As I often do after asking for help, I solved my own problem with a simple tick box:

Hello, I'm new to the forum and relatively new to 3D printing. I've been prototyping some tools and parts for my company, and came across a problem to which I couldn't find an answer through google or this forum's search: I have an STL generated in solidworks that I've placed into Cura version 3.1 (mostly awesome program BTW), and it refuses to generate the top layer or any infill within the part unless the infill is set to 100%. It will not even generate support inside the part. I'm thinking that there is something wrong with the STL, but I am not skilled in investigating model problems. The "Solid View" shows the top surface just fine, but switching to the "Layer View" reveals the problem. I've tried: -Re-modeling the SLDPRT file completely, saving as an stl, then re-importing it into Cura. -Increasing and decreasing both the wall and top/bottom thickness. -Enabling and disabling generation of support -Changing infill percentage from 1 to 99%, but the only time the top surface generates is with this at 100% as I said. Please help? If I need to upload more photos or files please let me know. Stuffing Tool.STL