[time-nuts] Broken Ovenaire OSC 85-50 - crystal failure ?

[Kit Scally]

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.

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