I have finally finished building my 8x10 enlarger from a Beseler45mx chassis using the 8x10 conversion kit and Aristo VCL8100 head. I am using the Rodenstock Rodagon 240mm lens (which I had to file out the enlarger lens stage to get it to fit, due to the large rear element of the lens). Now I notice this used lens is not all that clean inside. There are dust particles I would like to remove if possible. Can this lens be unscrewed for cleaning? I see no easy access to the interior. Any suggestions?
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