About this 3D model

Disclaimer: Due to the recent incidents (things appearing on ebay) I just want to make something very clear: I do not allow any commercial use of my STL-files, my designs and my photos! Description: I wanted a quality calibration and demonstration thing for my 3D printer. And there are a lot of calibration things on thingiverse. But most of them are quite abstract and this is really booooring. So I designed something more realistic, something that lets me try different slicer settings and then directly see the results. And of course something I know how it should look like when printed. EDIT: I added a flat-laying version. Disclaimer: This work by blecheimer is licensed under CC BY-NC-SA 4.0 . You are not allowed to copy this model to other 3D printing websites without my permission.