I have ordered six of each board, as this seemed to be the sweet spot in terms of cost and numbers ordered. Buying one of each would have been a only a little less. Buying 10 of each would have been much more expensive and would have no doubt exceeded global demand for them.
I am happy to sell the extras on to other members; it would be nice to recoup some or all of the money spent as I am now going to get some lens boards made in size 1 from another firm that uses a lathe.
What I want to have made is 39mm threaded boards and use shims to fine tune the focus between the lenses, as I think this will be the easiest to use and the cheapest to make. The fine tuning can be established by rotating the lens and measuring the correction necessary. I have found an engineering company that stamps shims out of stainless steel. The OEM helical boards would be very expensive to make and I think they will be a nightmare to fine tune, I am dreading setting up my 210mm (I already have a helical adjustment board for this pair).
If anyone is interested I have found a guy in Portugal who is making me a size 1 lens mount (i.e. a correctly dimensioned threaded brass replacement for a size 1 shutter), I didn't feel I needed an aperture on a 270mm viewing lens (and couldn't find a mount with or without an aperture) and didn't want to "waste" a shutter. This way I can retain a shutter for a 270mm on a Linhof board for my Wista and swap the groups out when I am using that camera. If anyone knows of a better cheaper solution, I would love to hear it even though I have now spent the money (~£40).
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