[ATM] TDE Theory
richard1941 at gmail.com
Wed Oct 21 01:57:13 JST 2009
Has anybody considered the theory of homeopathy? Polish with the usual 1/3
W stroke, and save the slurry that runs off. Dilute that slurry 10:1, and
shake it up real good. Repeat the dilution ten more times, shaking the
fluid each time. Then use the resulting solution to polish. According to
the theory of homeopathy, "like (highly diluted) cures like". According to
homeopathy, the water molecules acquire a negative memory of the energy
vibrations of the defect and impress a curative power against the evil
miasmas that are responsible for the defect.
I tried this on my truck's "hangar rash", and it did not work. Since
homeopathy didn't work for me, I'm going to Mexico in a couple weeks to see
if they have a burro that can kick the dents out of it.
From: atm-bounces at atmlist.net [mailto:atm-bounces at atmlist.net] On Behalf Of
Sent: Monday, October 19, 2009 6:53 PM
To: 'Brad Gilbert'; 'ATM list'
Subject: Re: [ATM] TDE Theory
> -----Original Message-----
> From: Brad Gilbert
> Subject: [ATM] TDE Theory
> around 60F now. Some how in this cold bout, my TDE has gotten
> significantly better. Thus, I came up with a theory of why this is. I
> noticed the center of the mirror was significantly warmer than the
> edges which were still very cold.
> So, my theory is that most of TDE is caused by a thermal differential.
Not to discourage theorizing what might cause TDE, but I think not.
I have my own theories, maybe right, maybe wrong.
If the temperature difference made a significant difference in the absence
of other differences, I would think that there is more chance your pitch is
closer to the proper hardness at the lower temperature.
If you put a thick slurry of CeO on you lap and press the mirror on it with
no added weight for 4 ore 5 hours, the squirt some water in the channels
with the TOT and let it soak in for 30 minutes or so.
Here is a Youtube video someone posted of how to separate them.
Assuming... that you have gotten away from the oblate and near a sphere or
maybe even a little toward a parabola I think this might work
Without adding any CeO at first, you just pressed all you need into the
facets, try the stroke in this video and see if the edge gets better.
The video is short and only shows work at two positions (steps) around the
barrel. Make it about 12 steps around (give or take a little). Try about 30
minutes of that for the first time and see if it works.
Don't add CeO or water unless it starts grabbing and add only a little at a
time. Use slow and smooth strokes. I forgot what size mirror you are working
on. I think it was a 12 inch. Just the right amount of dampness on you hand
will allow the palm of your hand to get a grip on the back of the mirror.
Too much or too little and your hand will slip. Downward pressure of about 5
pounds ought to be about right for a 12 inch. The other hand only guides the
top disk. You could do this TOT but be sure the lap overhangs the mirror
edge on the stroking side.
If you try this let us know how it works. I don't know how bad your TDE is
but maybe you could post a before and after picture. It might take more than
one or two sessions.
What are you using for pitch?
My theory on TDE: Everything has to be right. By "everything" I mean the
pitch itself, lap thickness, proper trimming, good contact, proper slurry,
slow smooth stroke, temperature, humidity, phase of the Moon, and number of
days until the next equinox. I have left out some more difficult to
Oh! One other thing. Try to keep the lap full size or even a little larger
than the mirror. Don't make the lap smaller by beveling the lap edge. If it
presses out the edges a little, just let the edge of the mirror shave the
edge of the lap.
This is the secret sauce. Don't tell anyone else.
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