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LAPIDARY ARTS and FACETERS DIGEST
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Issue No. 289 - Friday, June 18, 2004
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Moderated by: Thurmond Moore III
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Committed to carrying on the fine works of
Hale Sweeny and Jerry Dewbre
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POST TO EITHER LINK BELOW:
lapidary@caprock-spur.com
faceters@caprock-spur.com
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VISIT OUR WEBSITE TODAY
http://www.gemcutters.org or
http://www.facetersdigest.org
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Hi all,

Here is this weeks list. Thanks to all who
posted. Without you there would be NO
list.

Thurmond

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Index to Today's Digest

01  RE: Widmanstatten lines
02  RE: List Comments
03  RE: List Comments
04  NEW: Anonymous site submission
05  NEW: Cloud Dome, YAG Trillion
06  NEW: Backups (off topic but good advise)

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Message:01

Subject: Widmanstatten lines
Date: Fri, 11 Jun 2004 16:36:59 -0400
To: lapidary@caprock-spur.com (LapidaryArtsDigest)
From: "Jonathan L. Rolfe" <jon@gearloose.com>

>i have some plates of meteorite (nickel and iron) showing the typical
>pattern but although i can make that pattern reappear after filing or
>sanding (using HNO3 40 %) i tried to weld the plate to 18crt gold and if
>the welding succeeded , the pattern disappeared and the acid does not work
>anymore
>is there a reason or is there another receipe i should use
>thanks in advance for the help
>
>Hi Bruno,  Sounds like the heat of welding destroyed the crystaline grain
>structure to me. I could be wrong though.

The temperatures used in welding and brazing are too high and the cooling
and heating rates are too quick to prevent dissolution of some phases and
rapid (fine grain) recrystallization.  Can it be mounted in a bezel?

__________________________________________________________
Message:02

Subject: List Comments
Date: Sun, 13 Jun 2004 22:34:43 -0600
To: <lapidary@caprock-spur.com>
From: "Jack Schmidling" <arf@mc.net>

>Hi Jack,

>The reason that the list does not come out daily is two fold.
#1  The membership of nearly 1100 individuals do not post frequently enough.
#2  My list is not automated like yahoo. I have to produce it by hand to
achieve
the look and feel I am looking for.

I understand and was only trying to make the point that this is the only
interest group I have ever been involved in that does not have even one real
time list.  Not even usenet.. even the jewelry group has a moderator that
has to clear all messages.  There simply is no place to get a fast answer to
a question and this is a pity.

js

_______

Hi Jack, Real Time is a dangerous thing these days due to trojans and viruses.
Many times I have received post to the list that were nothing more than viruses.
If the list was real time then all members that subscribed to the "immediate mode"
would receive the infection. Yahoo groups is about as real time as it gets but
they have billions to spend on equipment to reduce the chances of "malware".

I also would like to reiterate that if 10 post come it the list will be produced. If this
is twice a day then the list will come out twice a day as well. While still not "real time"
it would be close.

Thurmond

__________________________________________________________
Message:03

Subject: Digest
Date: Tue, 15 Jun 2004 06:29:24 +1000
To: faceters@caprock-spur.com
From: ronjones@qantas.com.au

Thurmond,

From the response in this issue of the digest it would appear that some
people can not be satisfied.

I for one am more than happy with the digest and the volume of faceting
information that is posted down here we do not such an article or means of
advice for the faceting world so the digest is a major source of help and
information for those of us who need the help and advice.

Who was it that said " you are never to old to learn or to receive help"
then again I guess some of us do not believe that we need the help or
advice.

Keep the good work up.

And I guess we all should start supporting the digest more than we now do
me included. You never know that little trick you just stumbled on might be
the saviour for the rest of us when cutting a difficult stone.

Help did I say that well what do you know I now need help or advice I am
cutting a piece of quartz or that is what I thought but am having a problem
cutting it as it is very hard.

I started to preform it using a 360 lap but had to change to a 180 to rip
off the waste and now have returned to the 360 but surprise surprise the
360 is cutting like it is a pre polish lap I have never in my life came
across a piece of quartz that is so hard.

The stone is a clear as a bell and has a concoidal fracture but I am not
able to see a cleavage plane so I have ruled out Topaz I thought it was
just the trim saw blade wearing out when I was trimming it as it was so
hard to slice but now I am having second thoughts.

There was the usual veiling in places in the whole stone before I put it
through the trim saw and i have kept all of the pieces but I am still at a
loss on this one all of my books tell me it could be this and that but I do
not know.

Has any body any ideas on this one it would be appreciated.

By the way the saw blade had only cut one piece of quartz prior to this
piece and the laps are reasonably new if I my better half it right we
collected the piece from a known Topaz area along with some other quartz that
have cut like quartz so any help would be appreciated.

Best wishes to all

Ron Jones

_______
Hi Ron,  Thanks for the kind words. Jack explained his remarks above. The list was
orginally created for those without ready access to a local Gem and Mineral Club and
that remains it's primary purpose. The exchange of information for those who do not
have other channels to obtain it.
I belong to the Lubbock Gem and Mineral Society but it is an eighty mile drive for meetings.
With $2 per gallon gas this and other list are back at the top of my Lapidary resourses since
travel to the monthly meetings is too costly.

Have you measured the specific gravity of your "quartz / topaz" ? Also If it is topaz then it should
scratch quartz but quartz should not scratch it.

Thurmond

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Message:04

An anonymous recomendation for the following site was submitted
by a member
www.gemsandrough.com

I do not know anything about them. I did take a look at their site and their
prices do seem to be good. Use your own judgement.

Thurmond
__________________________________________________________
Message:05

Subject: Cloud Dome, YAG Trillion
Date: Thu, 17 Jun 2004 09:02:28 -0400
To: faceters@caprock-spur.com
From: mskelly <mskelly@gte.net>

Hey--
         I just cut a YAG emerald green trillion from a Jeff Graham design
and photographed it under a Cloud Dome. The stone is beautiful, and, thanks
to the Cloud Dome, the picture is beautiful, too.
         The Cloud Dome is a large plastic bowl that diffuses light and
helps eliminate unwanted reflections. It's a bit on the expensive side but
worth the money if you need to photograph things that are shiny and smaller
than a breadbox. My stone pictures are much, much better since using this
device. If you use a digital camera, you would also be well advised to use
PhotoShop Elements to maximize your picture results.
         I don't work for either one of these companies -- I just like
their products.
         The Stone: http://www.the-gemmery.com/Off-the-Dop.htm
         The Dome: http://www.clouddome.com/
         The Program: http://www.adobe.com/products/photoshopel/main.html
                 Regards,

mike in West Coast Florida
www.the-gemmery.com

__________________________________________________________
Message:06

Subject: Backups
Date: Thu, 17 Jun 2004 11:04:52 -0600
To: <lapidary@caprock-spur.com>
From: "jake" <efjke@msn.com>

This is a cautionary tale. Since everyone on this list is connected with 
a computer and in most cases have a windows operating system I should 
mention something. As you know; windows is inherently unstable, because 
of software problems I had to reinstall windows. And it didn't want to 
reinstall due to some software glitch mentioned.

They always tell you to back everything up before beginning anything 
like that. Now as far as documents go and favorites I had copies. What I 
didn't back up was the mail, actually that was backed up also, but not 
for several months. While I did not loose anything of vital importance I 
did loose a few things I wanted to keep. Backing that up is not hard to 
do just click on export and do not select a program, click next, then 
when it comes up click browse, select or create a folder then select 
all. (Preferably on a secondary hard drive or such.) While most times 
this is unnecessary it seems that when you don't do it is when you have 
a problem. The only major problem other than reinstalling all the 
software (a real hassle) was the password for the IGS site, for the life 
of me I couldn't remember which one was the latest, that has been 
resolved, after a few hours of frustration. So save yourself some 
trouble and if you have mail you wish to keep back that up also as this 
is often over looked.

In my case the only thing of great importance I lost was I struck up a 
conversation so to speak with a guy owning a quite a bit of Louisiana 
opal. He sent me quite a bit of information on it and while most of that 
is committed to memory I do wish I had kept it. I was just a bit lazy 
and paid for it, but do have things I have kept for over five years, 
just not the last several months. So take the time to remember that also 
before beginning anything like that, as always it seems it may prove to 
be unnecessary unless you don't do it.

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Post something from your experiences in gemcutting today!
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TODAY'S FUNNY ~

Cartoon Laws of Physics
Cartoon Law I

Any body suspended in space will remain in space
until made aware of its situation.

Daffy Duck steps off a cliff, expecting further pastureland.
He loiters in midair, soliloquizing flippantly, until he chances
to look down. At this point, the familiar principle of 32 feet
per second per second takes over.

Cartoon Law II

Any body in motion will tend to remain in motion until solid
matter intervenes suddenly. Whether shot from a cannon
or in hot pursuit on foot, cartoon characters are so absolute
in their momentum that only a telephone pole or an outsize
boulder retards their forward motion absolutely. Sir Isaac
Newton called this sudden termination of motion the stooge's
surcease.

Cartoon Law III

Any body passing through solid matter will leave a perforation
conforming to its perimeter.

Also called the silhouette of passage, this phenomenon is the
speciality of victims of directed-pressure explosions and of reckless
cowards who are so eager to escape that they exit directly through
the wall of a house, leaving a cookie-cutout-perfect hole. The threat
of skunks or matrimony often catalyses this reaction.

Cartoon Law IV

The time required for an object to fall twenty stories is greater than
or equal to the time it takes for whoever knocked it off the ledge to
spiral down twenty flights to attempt to capture it unbroken.

Such an object is inevitably priceless, the attempt to capture it
inevitably unsuccessful.

Cartoon Law V

All principles of gravity are negated by fear.

Psychic forces are sufficient in most bodies for a shock to propel them
directly away from the earth's surface. A spooky noise or an adversary's
signature sound will induce motion upward, usually to the cradle of a
chandelier, a treetop, or the crest of a flagpole. The feet of a character
who is running or the wheels of a speeding auto need never touch the
ground, especially when in flight.

Cartoon Law VI

As speed increases, objects can be in several places at once.

This is particularly true of tooth-and-claw fights, in which a character's
head may be glimpsed emerging from the cloud of altercation at several
places simultaneously. This effect is common as well among bodies
that are spinning or being throttled. A `wacky' character has the option
of self-replication only at manic high speeds and may ricochet off walls
to achieve the velocity required.

Cartoon Law VII

Certain bodies can pass through solid walls painted to resemble tunnel
entrances; others cannot.

This trompe l'oeil inconsistency has baffled generations, but at least it is
known that whoever paints an entrance on a wall's surface to trick an
opponent will be unable to pursue him into this theoretical space. The
painter is flattened against the wall when he attempts to follow into the
painting. This is ultimately a problem of art, not of science.

Cartoon Law VIII

Any violent rearrangement of feline matter is impermanent.

Cartoon cats possess even more deaths than the traditional nine lives
might comfortably afford. They can be decimated, spliced, splayed,
accordion-pleated, spindled, or disassembled, but they cannot be
destroyed. After a few moments of blinking self pity, they reinflate,
elongate, snap back, or solidify.

Corollary: A cat will assume the shape of its container.

Cartoon Law IX

Everything falls faster than an anvil.

_______
Note:  Yea I do still watch cartoons at age 45. A lot in fact.
Everything else seems to be turning to filth and the toons of my childhood
are comforting even though they were somewhat violent.

Thurmond
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TIDBITS AND REFLECTIONS~

"We shall not cease from exploration, and the result of all our exploring
will be to arrive at the place at which we began and know it for the first time."

T. S. Eliot

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LAPIDARY ARTS and FACETERS DIGEST
is produced by Thurmond Moore III
owner-lapidary@caprock-spur.com

Tempie Francis, Attorney at Law / Legal Advisor

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