[Milsurplus] QST, Dec 34, and Jan 35 and crystals

[Charlie L.]

I believe it is these two editions of QST that contain articles about
rolling your own crystals.  In the article is info on how to inspect and
select Brazilian quartz, how to look at the crystal to determine the angle
to cut, even for overtones, a design of a saw to cut the slivers which used
nothing but a copper toothless disc, and that secret of the ages, the
formula for determining the thickness of the cut to get close to the target
freq.  I have this little gadget, pic attached, that you could use for
testing that consists of a way to clamp the quartz in the holder, maybe
this was a testers crystal making aid, don't know but sure looks like a
quick way to test the element.

Charlie in NC
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