Centerfinder

I liked the original design a ton but prefer, where possible, to not have to add hardware or do any assembly after printing. Hence, this remix.

The circular element is placed against both raised flats, as it would have been with the original pins, and the centerline marked.

The SolidWorks file was made from the original IGS, as I used an older version than Bastian, so the original features are not present in it.