I have some issues uploading to sketchfab. In my modeling software (blender) everything seems normal and when I look if the normals are set right, it shows them right
How it appears in blender:
And how it appears in sketchfab:
I think it has something to do with rotating/scaling parts after I duplicate them, because it mostly happens to meshes that have been duplicated. However theres no use in flipping normals in blender, because theyre already set good.
Any suggestions to how I can fix this? Also I just started in blender, so please explain it with not too many complicated terms that I might not know. (or just explain them)
PS: sorry for the imgur url, but I am not allowed to post more then 1 image.