Al said:
Then we'd disassemble the xtals and soak em in acid for a few minutes
to tweak them up 3 or 5 KC.
I never did that. I used to make a slurry with Comet (the cleanser,
before it went grit free) and, using an index finger on the xtal, make
circles in the slurry to grind the xtal (move
On Sat, 16 Jun 2007, DOUGLAS ZWIEBEL wrote:
To lower the frequency, I used to make figure 8's using solder to
draw on the xtal's flat surface. Of course, you could not lower the
frequency too much that way or the xtal would stop vibrating.
I remember using the lead from the softest pencils
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