Help - Print missing large sections

[lednebsakul 0]

Cura seems to generate random gaps in my model. If I flip the model 90 degrees the gaps also move 90 degrees. Any help much appreciated.

[GregValiant 1,330]

In that first image you posted there is a big message box that says "Model errors"...fix your model and open it again in Cura".  You can also see the multi-color areas that indicate where Cura has found errors in the model.  Those bad areas are confusing the slicing engine.

If you are on Windows then MS 3D Builder is pretty good at repairing models.  Mesh Mixer and Blender are also options.  Cura has "Mesh Tools" available as a plugin in the MarketPlace and it works for fixing simple errors but your model I think would need more extensive repair.

The skirt is formed incorrectly also.  I think the bottom of the model isn't flat, or the model isn't flush on the build plate.

 

[lednebsakul 0]

Thank you GregValian, MS 3D Builder worked a treat to fix the model.