Quick-Mount

For my 3D printer I wanted to have a possibility
to load different tools onto my X Carriage without much effort
e.g. Hotend, Drill, Dial Gauge ....
As I did not find something matching, I decided to create something
by myself.
Eventhough the result looks quite nuclear, its not radioactive at all
and even easy
put the two Halves together, rotate by 45 degrees and lock it with
a simple stick(e.g. nail) . This results in a firm connection.

I have attached the source STL file so t