Need help with fixing carl zeiss jena DDR 50/1.8 auto

maciekmode

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1:43 PM
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Jul 25, 2025
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Poland
Hello. I'm new here but I have problem with my lens.
lens.jpeg The lens I'm talking about.

So basically there is a problem with aperture ring does not work. It rotates freely even though aperture works flawlessly. I took it apart and the part that is broken fell form the lens (photos below)broaken part (3).jpegbroaken part (1).jpegbroaken part (2).jpeg. I was able to find a place where it should have been mounted.
mounting place.jpeg
Can you give me any tips how to fix it. I thought about 3d printing broken part but I don't have skills necessary to design it myself.
Thank you in advance. - Maciek
 
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