Hey, hello dear moi3d users - I'm spend the last months on focus on digital painting and now I did made a simple model in 3D, with moi3D - its just a simple tower for my next painting. For a Painting my result is nice ebough, but I see in SILO, that my OBJ Mesh (exported form moi3d) - did have some weird extra polygons - at the same place, like an onion with a second skin. How can I avoid an ONION-EFFECT?

here is my file-location

http://www.mediafire.com/file/zuf3fu7yezhpz9o/darktower-2export.3dm

thank you so much