Hello, I'm a new member and this is my first post. I am using translation and forgive me for mistakes already. I am having a problem with the subject. A friend recommended me to download the 3D Builder plugin. Please export as stl after repair option from this plugin. https://www.microsoft.com/tr-tr/p/3d-builder/9wzdncrfj3t6?activetab=pivot%3Aoverviewtab