Old Carl Zeiss Icarex bayonet mount to Sony-E (NEX) adapter

This adaptor is to be printed in 3 parts. The midle part "tube" should be printed with the middle pin facing down.
This is the only unsupported part of the print.
Then glue the three parts with CA glue. There are alignment pins in the cylindrical parts to index them.

As the old saying tells: if you can't make it perfect, make it adjustable.
So feel free to add 0.1mm painters tape on the Zeiss side as I did, and you can also glue with CA standard 0.1mm printer paper to make the Zeiss bayonet side tighter if your lens is worn out (my 135 f4 needed it).