Fun little project

So I bought the Rodenstock Splendar 100mm f2.8 projector lens to test it and try to adapt it for nikon F mount So I had a hollow lens with nikon F mount which its internal barrel fits the projector lens I had to saw of about 1 cm of the projector lens barrel to acheive infinity focus and voilà i acheived infinity focus Next step was aperture control at first I tried paper cut outs to that I stuck to the rear element as fixed aperture but I wasn't happy because it was not perfectly cut and the fixed aperture drove me crazy So I had the aperture mechanism of the same hollow lens, i had to saw of part of it to make the housing of the aperture mechanism thinner and I taped it to the rear of the projector lens and finally I have variable 6 blade aperture for my Rodenstock splendar lens .... I am really happy with results ... The down side is to adjust the aperture I need to unmount the lens and use a long thin dowel or rod to adjust the aperture lever as I have no way to attach it to an external aperture ring....Finally I taped a hollow black tube ( lens parts I had lying around) to the front of the lens with a 52mm UV filter which i removed its glass so Now I can attach 52 mm lens cap and filters to the front of the lens .... I think the project is done unless some one can suggest a way to control the aperture without unmounting the lens