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I have a 25t female spline at the bottom of an 80mm diameter plate see attached STL. The top of the spline is filled with a hole in the middle. The spline detail is filled with plastic when printed. The hole detail at the top is there. It does not seem to be support material. It is very solid like regular print material. I am using standard print setting with raft and supports selected. I am wondering if using the high setting will correct this or do I need to fine tune the settings with the custom settings. I used FreeCad to create the attached STL. I did a mesh analysis on the file and it has no errors. Any help on what is causing this would be appreciated.
table4.stl (139 KB)