tristan.led
15
Nice!
Mar 26, 2019,03:19 AM
Thanks for chiming in, as a maker of watch it's nice to have your point of view.
I agree with you that CNC doesn't always mean accuracy. I just bought my second jig borer (Hauser 2A3) so I am lucky enough to tingle a few microns every now and then.
But what I've struggled with with my first few prototypes of movement it's exactly this : interchangeability. and it is IMHO linked to repeatability and accuracy. making the same part over and over with the same dimensions, even slightly off of what you wanted, you'll now what to modify in the part that works with it.
For instance, my problem was with the anchor bridge, and the mainplate. One bridge worked only on the mainplate I adjusted it for. I made another movement, switched a few parts and it didn't work as well. Granted, it was also a problem of tolerances since I made my parts to be done by CNC, or with a Schaublin and Hauser.
Which means that since I do all with the machines I have, I have to be really focused when making a part, as too big of a diameter in a recess means that my bridge pin won't stay in place on the mainplate, and too little of a diameter means the anchor bridge won't fit
I agree with you on your vision of the CNC. To be fair, I've only seen those decoration type of CNC in companies that make a minimum of 800 watches a year. And for a lot of parts they still used the hands of highly skilled operators.
But knowing this kind of thing exists makes you wonder how it really is in companies like Patek. The endmill company I work with even has an endmill made for inward angle. So when I hear that inward angles means it's done by hand since the machine can't do it, it's a lie.
We can clearly see on your anglage that it's done by hand, it's rounded and uneven (don't get me wrong I love it!)
Good luck with the watch! Can I ask how you'll manage to make the case?