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Nikon Non-AI to AI ring

The original AI conversion kit

I wanted to test the limits of the accuracy of my RepRap 3D printer and also make this old lens work on my modern Nikon without having to machine the original parts. I managed to do exactly that, and I think that the file should work fine on other lenses if you tweak the parameters.

Created with OpenSCAD.

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Rabbit ears for the AF-D lenses