Hi If you try “normal” machining techniques on a resonator, you are very likely to create micro cracks in the material. Those are *really* bad for aging and a few other issues ….. Much of the normal production flow of the quartz is designed to keep the processes like sawing far enough away from the “end product” that more gentle techniques can be used to remove the (possibly) damaged material.
Since the slots are pretty darn small, there isn’t a lot of room for this and that to be done when making them. There may well be better ways to do the work today than back 20 or 30 years ago. It would still take a *lot* of effort to validate a process. Bob > On Feb 3, 2018, at 7:24 PM, Poul-Henning Kamp <p...@phk.freebsd.dk> wrote: > > -------- > In message <0f9a9acc-4cdf-780f-e633-616262264...@earthlink.net>, jimlux > writes: > >>> [1] Surprising to me is that modern dentists are highly kitted for >>> CNC-ing very hard ceramic materials at high precision. >> >> But, small "tooth sized" pieces - how big is your crystal. > > Well, they appearantly make a mouth-full at a time, so that is > covered... > > I don't think the dentist machines are precise enough though, > as I understood it, the state-of-the-art stuff has built in > laser-interferrometers etc. > > -- > Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 > p...@freebsd.org | TCP/IP since RFC 956 > FreeBSD committer | BSD since 4.3-tahoe > Never attribute to malice what can adequately be explained by incompetence. > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
