After several failures hand coding the 6bit on a Zeiss Biogon 2.8/35 with black markers, paper etc., I have decided to make a proper pattern of recessed forms in de flange using a mill. However I am not absolutely sure about the layout. I seem to remember that somewhere at the net or maybe even at this forum somebody posted the exact layout with dimensions and angles and even tolerances but I cannot find it anymore. So if somebody knows what I mean and still can find it, I would very much appreciate. What I have done so far is to take the jpeg picture from bophoto and measured it. The difficulty is to measure angles accurately but I hope these results might be correct where there is 114° between the center lines of that open recess and the first bit recess. Then there is 5° between each bit. I assume that these angles are valid for all types of flanges? Any comments? Sorry about the big size of the drawing.
Charles