@sliptonic , I just had a look cnctorture and couldn't see how to get the actual files. My instinct was to click on the image to get the details or a FCstd file.
I found you need to click the name but since the HTML does not show the usual colour indication of what is a link, I did not realise until the mouse passed over the name and the underscore jumped out. It would be helpful if the images were active too, or name shows up as a link.
Hopefully this flesh out with some new submissions. It's a good idea.
Do you think the "wall of death" file I posted above is worth adding. Relative arc path are know to be inaccurate is certain cases so this may be useful test of CAD as well a good machine test. It cuts a pocket either side of a circle so theoretically there is nothing left. If there is any play in the machine, this probably won't be the case.