Today I received nice lens from ebay with sticky aperture. Before messing with it I decided to practice on lemon copy of Vivitar 135mm f3.5 lens, some "professional" ebay seller sold like no prob lens. That lens is always wide open, and the blades never close when pushing the pin. The blades are so oily, and not only blades, all the lens is total oily mess inside.
Anyway, I took apart anything I could and discovered that front lens element and blade element are glued together. Darn!
So, the blade part was assembled first, then glued together with the front element, and it's impossible to reach the blades to take them out and clean.
What's now? Dumpster?
Here are the blades. All aperture mechanism is assembled above blades. Blades itself are assembled from another side.
And here are two epoxy glued parts, so the blades are in between inside.
It simply does not make any sense to glue the parts and make it impossible to clean.
Is it any hope there?