Thanks Treetop, yes it seems improbable that there isn't a 'straightforward' way of matching threads on older clocks but there isn't. It always seems to be quite an involved process but worth preserving the threads I think. Glad you found it useful. M
Another great video Mathew. I collect primarily Beha cuckoo clocks, and I’ve come across several clocks with missing hour, and minute hand nuts. I to have found it impossible to match up the threads with modern day thread sizes. I’ve often wondered if they used a lathe, and came up with their own thread sizes? I’ve tried to swap the hour and minute hand nuts with the same movements. Thirty hour movement to thirty hour movement. Or even from fusee to fusee, and running into issues with fitment. So obviously there’s several different thread sizes that they used. I’ll definitely use this video to try and re-create these nuts. Thank you!!
Thanks William. Yes there are a near infinite number of thread pitches to thread diameters out there. If the clock is post 1850 then I would always look at BA first and of course Whitworth for courses work. Glad the video was of use. Yours, Matthew
