No subject


Mon Apr 27 04:27:16 UTC 2009


colored part.  What about a propane torch applying just enough heat to allow the
copper to drop away ?

Bill....WB6BNQ


Kit Scally wrote:

> James,
>
> These are "before" photo's ... I think a Dremmel is the tool of choice !
>
> Kit
> VK2LL
>
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> Behalf Of Lux, James P
> Sent: Sunday, 5 July 2009 8:12 AM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] Broken Ovenaire OSC 85-50 - crystal failure ?
>
> On 7/4/09 1:49 PM, "Hal Murray" <hmurray at megapathdsl.net> wrote:
>
> >
> >
> >> I've not attempted to butcher a capsule open to determine the cause -
>
> >> this to my mind is bordering on the sacrilegious but if given
> >> absolution from another TimeNut, I may attempt it and photograph the
> >> results ...
> >
> > What have you got to lose?  Is it good for anything else?
> >
> > I probably wouldn't bother unless I had a camera that was good enough
> > to get a nice picture in case I found something interesting.  (This
> > might be a good excuse to get a good camera.)
> >
> > How would you open the can?  I was thinking of using a file, but
> > that's likely to setup vibrations which could cause enough damage to
> > mask the initial problem.  Maybe if it was held in a vice.
> >
> >
>
> Clearly, the tool of choice is a plasma cutter, because you don't get
> the oxidation you do with the oxyacetylene torch, and it works better on
> stainless steel anyway.
>
> Actually, what about a sharp knife making repeated trips around the edge
> (think of a tubing cutter). You get a very clean cut.  For the old TO-5
> type cans, I've chucked the device in a suitable drill press (a lathe
> would work), and used a utility knife on a suitable rest (e.g. A block
> of wood). You probably aren't lucky enough to have a round can, though.
>
> Or a cutoff wheel or saw blade on a dremel type tool. Both work quite
> nicely.
>
>   ------------------------------------------------------------------------
>                       Name: E1938A xtal.jpg
>    E1938A xtal.jpg    Type: JPEG Image (image/jpeg)
>                   Encoding: base64
>
>   ------------------------------------------------------------------------
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