October 3, 2020
Description
See the original work by MrGundam. I just found a way to fix broken STL that was not even opening in meshmixer. Half of meshes were with flipped normals. The reason it is broken is because it is an export from Sketchup. If you want technical details, see here - https://forums.sketchup.com/t/mirroring-flipping-component-normals/85972
What I did is found a way around it. Since MrGundam kindly provided Sketchup file as well, I've loaded it up, exported .obj file instead, loaded it in Meshmixer and exported STL. IT is not broken and opens up in slicers.
License:
Creative Commons - Attribution