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I'm always a bit in awe of Walshaerts and some of the other brilliant engineers back in the day who could work out linkages like that with little more than pencil, paper and a slide rule.
Can you help yourself from Not trying it on air Per
I didn't use the setting jig as the same heights can be set with gauge blocks. Your result looks excellent.
Great progress on this build - and I really admire your long haul staying power! It is a mighty project and fascinating to look back from time to time at prior work done.