I have an old Heliar 180mm that I want to use for a project on a Chamonix 2n for a few weeks. The problem is that it needs a lensboard that is 49mm and I can't find that in a technica type lensboard. I do have a technika lensboard that is much wider and I am wondering if I could fill in the gap some way, or could I make a board out of really stiff carboard?
I haven't got routing tools, but I am quite handy with an exacto knife.
Or do you know of anyone who makes lensboards for people?