As far back as 1978-80 I worked with quartz crystal. We used Varian wafering machines, lapping machines, K.O. Lee grinders, etc. to slice, lap and round all manner of diameters and thickness of quartz wafers for use in electronics. I still remember a blank that was .077 thick (in inches) would wind up being used in a 1 Megahertz chip.
The amazing thing here, to me, is that after spending that effort to grow the crystal, it seems like somewhere near 25-30% of it is lost as granules removed during cutting (kerf, grinding, polishing, etc)
The yield in the process shown here is far worse than that. They are using a slurry saw to dice the individual wafers. Each wafer is optimistically 0.5mm thick and you need to cut them thicker than spec for lapping and polishing.
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As far back as 1978-80 I worked with quartz crystal. We used Varian wafering machines, lapping machines, K.O. Lee grinders, etc. to slice, lap and round all manner of diameters and thickness of quartz wafers for use in electronics. I still remember a blank that was .077 thick (in inches) would wind up being used in a 1 Megahertz chip.
thats really cool
The amazing thing here, to me, is that after spending that effort to grow the crystal, it seems like somewhere near 25-30% of it is lost as granules removed during cutting (kerf, grinding, polishing, etc)
The yield in the process shown here is far worse than that. They are using a slurry saw to dice the individual wafers. Each wafer is optimistically 0.5mm thick and you need to cut them thicker than spec for lapping and polishing.
How much would one of these crystals cost fresh from the autoclave?
Super! Thank you very much!
can I order custom made crystal? say like 40x1 diameter? polarized with + and - side on the sheet?
Yes, how many would you like?
Was expecting much higher temperatures.
There are aliens in the universe...we are the aliens.
This is what's called "informative".
Раскрыта тайна изготовления Кварцевого генератора !
And this is the old method; ruclips.net/video/duZlWWwxIPQ/видео.htmlsi=cwgPqvyBd_1yCl7a
Just lose the music, it's out of control, anyway and sounds terrible.