[ARC5] WHINK and crystals.

[Bob Macklin]

Back in the das I was processing film I had a vibrator I could put film tank 
on and vibrate it while the film was being developed.

Bob Macklin
K5MYJ
Seattle, Wa.
"Real Radios Glow In The Dark"
----- Original Message ----- 
From: "Dennis Monticelli" <dennis.monticelli at gmail.com>
To: "Ken Gordon" <kgordon2006 at frontier.com>
Cc: "ARC-5 Maillist" <arc5 at mailman.qth.net>
Sent: Thursday, June 27, 2013 12:55 PM
Subject: Re: [ARC5] WHINK and crystals.


> Ken,
>
> A bubbler sounds good.  Ultrasonics would represent aggressive agitation.
>
> I used a piece of a plastic hair brush to suspend the blank on the tips of
> the plastic points.  I just cut off a section of the old brush to fit the
> container and placed it on the bottom.  The blank rests on the narrow 
> teeth
> and the slightest agitation slides the blank across the tips.  The only
> agitation I used was occasional manual swirling.
>
> You're right, the HF method rounds the corners and I have verified that
> with a microscope.  The old literature recommends re-grinding only one or
> two edges (but not all) to help restore activity.  I have had mixed 
> results
> with that trick.  Maybe I don't have the right grinding powder or flat
> enough plate or magic technique.  Or maybe it worked for one guy in the
> 30's the story just repeated itself over the years :-)
>
> Dennis AE6C
>
>
> On Thu, Jun 27, 2013 at 11:16 AM, Kenneth G. Gordon <
> kgordon2006 at frontier.com> wrote:
>
>> On 27 Jun 2013 at 10:22, Bob Moody wrote:
>>
>> > Dennis said, " You need to insure the solution has good access to both
>> sides without
>> > > masking off a part of any surface."
>> >
>> > So did you stir, shake or flip the xtal while it was soaking, or just
>> let it
>> > sit?
>>
>> I just let it sit. I was leery of agitating it enough to make it splash.
>>
>> > Maybe a tank with a bubbler to keep the xtal blank agitated?
>>
>> I have a bubbler. Good idea. I'll put that to work here.
>>
>> > Wonder how Bliley did it in the old days.......
>>
>> I dunno. Maybe someone on the ARC-5 list knows.
>>
>> Obviously, I need to make some improvements in my methods here. This was 
>> a
>> first
>> experiment for me, and everything was done somewhat haphazardly. But it
>> worked.
>>
>> I am pleased at this first attempt.
>>
>> Ken W7EKB
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