Hi guys,
Sorry but one DOES NOT need a CNC to manufacture a blank. One can perfectly well make all the plates etc, buy having a few lathes properly calibrated for milling, drilling, etc. Don's work is the most direct proof of this !
I was under the impression that Dufour's movements start as a rod of German silver that's cut into wafers, which are each then turned and milled to be the base plate, then the bridges are done accordingly (all in-house). These are all finished in house, and then AFTER he has the movement running and beating good, He sends all the plates to be rhodium bathed. Then assembled again, timed and cased, and timed again...
Dufour sources his cases, dials and hands, strap, buckle, (of course jewels as well) but all the pinions, plates etc are done in house. His relationship with the JLC cal movement was that it inspired the 'design' of his own movement. JUST like Louis Audemars 19th century sonnerie double barrel movemnts had a big influence on his design of his sonnerie pocket watches he sold to AP.
Please don't compare the Ferrier watches (which yes are very nice!) but 100 miles apart from the skill, thought, work and passion of a Dufour. Read up on both of the history behind these two men and you'll see just what I mean. And I am not saying one is better than the other, just apples and peaches!
Have a good weekend,
S