LAPIDARY DIGEST
Administered by Hale Sweeny (hale2@mindspring.com)
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This list digest contains the following message subjects:

1. LapDigest News for Issue No. 103 -
2. NEW: About the Maxant Automatic Cabochon Maker
3. NEW: Tumbling Questions
4. RE: Lapidary Glues and Cements
5. RE: Reusing Cooling Liquid from a Cab Machine
6. RE: Drilling Holes in Lapidary Items
7. RE: Dangers of Cutting Malachite and Others
8. BIO: Dana Reynolds
9. BIO: Craig Moore
10. FS: Little Beaver Arbor and Motor
11. FS: Tanzenite Cab Rough
12. AD: Take a Look


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<MSG1>

Subject: LapDigest News for Issue No. 103 -

Back in Issue 60, I told you that my home - the Research
Triangle area of NC - is the home of the producers of
synthetic moissonite, the diamond substitute. Our gem club
will have a talk by their CEO next month and it occured to
me that some of you may have questions about this material
which you may want me to ask. If so,, write them and
send 'em to me at my personal address:<hale2@mindspring.com>.
I'll write up a summary of what he says, for the list.

Some of you may have noted that I often suggest that you tell
those you love, that you love them, and to hug them often.
Mel Albright <mela@galstar.com> sent the following poem
around to several lists, with the admonition that he didn't
know the source and thus couldn't give permission to copy it.
Here it is; read it to someone you love.

And don't forget: National Hugging Day is January 21st.

It's wondrous what a hug can do.
A hug can cheer you when you're blue,
A hug can say, "I love you or,
" I hate to see you go."
A hug is " Welcome back again!"
And " great to see you! Where've you been?"
A hug can sooth a small child's pain.
And bring a rainbow after rain.
The hug, there's just no doubt about it--
We scarcely could survive without it!
A hug delights and warms and charms;
It must be why God gave us arms.
Hugs are great for fathers and mothers,
Sweet for sisters, swell for brothers;
And chances are your favorite aunts
Love them more than potted plants,
Kittens crave them, puppies love them;
Heads of state are not above them;
A hug can break the language barrier
And make your travel so much merrier.
No need to fret about your store of 'em
The more you give, the more there is of 'em.
So stretch those arms without delay
And give someone a hug today!
Dean Walley

But back to lapidary...

If any of you own and use lapidary scroll or band or ring
saws, would you please write and let me know what you own and
what you think of it as a lapidary saw? Thanks....

Now please stay safe, find the ones you love, and you know
what to do!! Above all, have fun!

hale
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<MSG2>

Subject: NEW: About the Maxant Automatic Cabochon Maker


I do hope that this is the right place for the following
question.

In the near future I shall buy a cabbing machine, and the one
I am thinking on is the "Maxant Automatic Cabochon Maker".

Living in Europe it is not so easy to get first hand neutral
information. Does anyone on this list know anything (good or
not so good) about this machine?

Thank you.

Harald
gem3@online.no
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<MSG3>

Subject: NEW: Tumbling Questions


Hale,

There has recently been discussion among our club members
relating to Tumbling. Is this a subject you have previously
visited? Are there archives? Can we ask for favorite methods
and tips regarding quality results? Pitfalls to avoid? Other
uses for Tumblers?

Thanks, and Hi to Anne

Terrie
From: tam2819@mail.telis.org

PS Don't you just love the hugs poem.
-------------------------------------------------------------
(Ed. Note: Terri, there are some files in the Archives you
should be aware of. First, Alan Silverstein put together a
large file of information on tumbling from past conversations
on Rockhounds and Rocks-and-Fossils mail lists; this file is
named:'Tumbling.txt'. I put together a list of tumbling books
which are listed in the file named:'TumblingBooks.txt'. A
discussion of how to finish almost-finished cabs by tumbling
is given in issues: 20,23,26. There are some tumbling
questions considered in issues 60 and 61. A question was
raised in Issue 69 about using diamonds in tumbling, small
tumbler motors were discussed in Issue 73, and a question on
breaking glassy rocks for tumbling was raised in Issue 88.
This really isn't much, considering how many of us have
tumblers.

I suggest you go back to the club members and write down some
of their questions, and submit them to the list; I'm sure
there are members who can help. This would be a good topic!!
hale)
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<MSG4>

Subject RE: Lapidary Glues and Cements


Someone raised a question about the shelf life of the Loctite
Crystal Clear glass adhesive which was recommended for
glueing clear caps onto doublets or triplets. I wrote to them
at: <info@loctite.com>, and today received their answer:

The shelf life is guaranteed for 12 months, but the working
shelf life is 24 months after manufacture. The date of
manufacture is coded on the applicator. The code on the
applicator before me is: 7GZ 109 1B. The first number implies
the year of manufacture. (7 = 1997) The second place codes
the month, where A=Jan, B=Feb, and so on; so the one before
me was made in July 1997, is guaranteed till July 1998, but
is good till July 1999.

hale
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<MSG5>

Subject: RE: Reusing Cooling Liquid from a Cab Machine

Hi All:

I haven't comented for some time, I know I owe you a story
Hale but have been so busy preparing equipment for
Gemstoneworlds mining operations in Tanzania.

I will be there again very soon. We hope to have some photo's
up soon, that I took on my last trip there. For those of you
who like to cut rubies we have some wow ruby rough in stock
now!.

Anyway, I will write a little about the diamond wheels and
recycled water. Most diamond wheels are electro-plated. Some
are sintered or to understand this easier, soldered, for want
of a better word. to the metal. Others (cheaper wheels) are
simply plated with diamond compound.

The main difficulty is clubs who still work in the old era of
silicon carbide wheels.

Some wheels are carbide and some are diamond. You must wash
your stone before transferring to the next wheel is the
standard club rule. Well, with silicon carbide wheels this is
true. but when it comes to diamond this is false.

Silicon carbide will transfer and float about thus allowing
particles to move around and stay with stones or be pumped
to another wheel. Rarely will the silicon particle go through
a pump and get transferred to another wheel as it would have
been grounded with the water/pump action, however it is still
a factor that could impact.

Diamond wheels are not the same. Plated wheels where the
diamond particules are in the plate formula will drop diamond
sometimes but generally only on the first use of a wheel, or
near the end when you are about to have it replated.

Sintered diamond wheels are what I use always. These are the
best in that the diamond is part of the metal; a wonderful
property this is! It means that you never worry about losing
diamond bits or have to wash your stone before moving to
another wheel. This also applies to plated diamond wheels.
You do not have to wash your stone.

The reason diamonds do not carry firstly is they simply wear,
get rounded and stop cutting. A good sharpening with some
sandstone and these diamond crystals are as good as new.

Secondly, they do not drop out. The only way diamond could
drop out if poor plating was the problem or you fracture the
diamonds in the wheel, ie, working with no water or PUSHING
TOO hard making too much heat. Diamond also has a different
float factor in water to that of silicon carbide.

I have never washed a stone when moving from wheel to wheel.
I mainly cut opals, and if anything were to be moving about
it would surely show with opal. The same with faceting, use
diamond laps! These never get contaminated. You could rub a
100 lap against a 600 lap and still use it without worries
that the diamonds had transferred. Yes, it might scratch it
but the diamonds will not transfer.

How do you keep your faceting laps clean and cutting to
peak?. Run a block or neatly cut fine grained sandstone on
them for 5 minutes and then cut a sapphire or similar
hardness stone. See the difference it makes.

Hope this helps

Regards
Ross
Gemstoneworld.com


GEMSTONEWORLD - WORLD GEMSTONE ROUGH - Direct Mine Prices
<Tsavorites@gemstoneworld.com><http://www.gemstoneworld.com>
Tanzanites, Tsavorites, Sapphires, Diamonds, Alexandrites,
Rubies Telephone USA: 1 - 253 - 5882350
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<MSG6>

Subject: RE: Drilling Holes in Lapidary Items


At a gem show several years ago, I ran across a man using a
miniture drill press, drilling holes in beads, slabs and you
name it. The material was placed on a bed of putty under
water and held by hand, The diamond drill was lowered and
raised after about a 2 second contact with the material. When
the drill was raised the grindings rushed out of the hole as
the water rushed in. It took 4 or 5 cycles of up and down to
drill through a 1/4 inch slab. I asked the man what kind of
drill he was using and could I try it. The drill as I recall
was A TRIPPLE RIPPLE and to my surprise I was able to drill
several pieces after he showed me how. The drill bits come in
various grits from very fine to course, and if used properly
will drill hundreds of holes.

I purchased a minature drill press made for drilling beads
and slabs. It has its own little container for holding the
putty and water. I have used this set up many time with drill
sizes from 1/4mm to 2mm. I dug out my drill press and sure
enough I have tripple ripple drills and I found their
instructions for use, which I include below.
--------------------------------------------------
6 pk 21-089
3/4mm Tripple Ripple Diamond drill

METAL-BOND DIAMOND DRILLS.

*Speed 5,000 - 20,000 rpm
*Choke up on point. Extend drill beyond chuck-jaws
only as much as needed to go through workpiece.
*Submerge in water or use constant flow.
*Use Drill Press. Hand held tool not recommended.
*Use rapid up-amd-downmotion when drilling,light to
moderate pressure.
*IMPORTANT-Always recognize that the drill tip must
always have coolant. A combination of excessive
speed, pressure, and dwell without lifting the
drill, will deprive the drill of water and the
tip may overheat, and POOF!

NOTE: AUTOMATIC DRILLS do not have sufficient
pressure. Use hand feed.
--------------------------------------------------

Further research shows me that these drill are made by
CRYSTALITE, but I would caution you all drills are not equal.
BE SURE IT SAYS TRIPLE RIPPLE. Others made by Crystalite, or
other manufacturer's just do not last.

I have also found that DAPFUN-PAC reusable adhesive works
well to hold to rock under water.

I hope the above helps.

Charles W. Covill
<charlesw@austin360.com>

Non Commercial do with it as you like!
-------------------------------------------------------------
(Ed. Note: Charles, can you tell us a bit more about DAPFUN-
PAC reusable adhesive? What is it? What form is it in? Where
do you buy it? ..tell us that sort of thing. hale)
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<MSG7>

Subject: RE: Dangers of Cutting Malachite and Others


If you're serious about protecting your lungs through the
use of a mask, don't waste your time and money on the single
layer paper coffee filter type. They're good for keeping
gnats out of the teeth, but that's about it. Take a look for
some of the multi-layered masks designed to keep out fine
particulates. These will be much thicker, have the padded
nose piece to contour to the nose, and two elastic straps one
that fits behind the base of the skull, the other over the
back of the head...

I look for Bureau of Mines/NIOSH approval labels on the
paper masks I get. I particularly like the green kind that
fold flat and have real elastic instead of a rubber-band to
hold them on.

Cutting safely is as easy as using just a touch more water to
control the dust. Can't say it enough, if you can taste it,
you're breathing it!

Unfortunately, even if you can't taste it, you can still be
breathing it. The water spray will form a mist around the
cutting area, and this will contain rock particulates. If you
don't believe this, set up a piece of glass near the grinding
wheel, and inspect it when it's had a chance to dry. The
white coating you will observe is evidence that water is not
a total solution to rock dust danger; you have to wear the
mask.


Andrew Werby - United Artworks
Sculpture, Jewelry, and Other Art Stuff
drewid@lanminds.com
http://users.lanminds.com/~drewid

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<MSG8>

Subject: BIO: Dana Reynolds


My name is Dana M. Reynolds; my address is 102 Rejoyce Lane,
Madison, NC 27025.

I have been involved in the lapidary field for approximately
6 years. I have earned my supreme master gemcutter
cerification from the American Society of Gemcutters in 1995.
I won the penicle award in cabachon cutting that same year. I
was vice president of the Rockingham County Mineral Club in
1997 and am now the president of the same club for the 1998
term.

I enjoy all aspects of lapidary; cabachon, faceting, carving,
prospecting, jewelry designing, casting,and lost wax carving.
I look forward to learning more about inlay and intarsia.

I spoke with Mr. Sweeny in the past about federation bylaws
etc. and find him to be a kind and very informative
gentleman. I look forward to gathering the wealth of
knowlege that my fellow lapidarists have to offer and think
this is one fine way to do this.

I have been collecting all types of fine cutting rough for
cabachon, carving, and faceting for the last 5 years; from
all parts of the world. This digest could also prove exciting
for all to exchange ideas, concepts, and rough sources.


Thank you Mr. Sweeny for putting this all together and if I
need to submit any futher information about myself please
let me know.

Sincerely
Dana M. Reynolds
GEMBINDER@juno.com
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<MSG9>

Subject: BIO: Craig Moore


I have been doing lapidary work for a few years.My interests
are mainly cutting stones and silversmithing, but I also do
some wire wrapping and mineral collecting.I have a 30 inch
slab saw with a bad blade, trim saw, tumbler, genie, 6 inch
flat lap, a cheesy polishing lathe and a homemade sphere
machine that needs some work. Always looking for good rough
and slab material.


Craig Moore
Wolfmann64@aol.com
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<MSG10>

Subject: FS: Little Beaver Arbor and Motor


Could you post the following?

For sale: Little Beaver arbor with:
.. Magnatek 1/3 hp motor 1725 rpm
.. qty 2, 6-inch expanding wheels
.. 2 end disk holders. asking $400
I decided to buy a Diamond Pacific Genie which I just got in
yesterday. All of the above equipment is new and never used.
The motor includes a mount and a pulley and also has never
even been wired.

Located in Atlanta, GA.

Tim Vogle
birdman@mindspring.com
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<MSG11>

Subject: FS: Tanzenite Cab Rough


I want to thank everyone who checked out my page and helped
me make sure the links were working. My home business has
expanded one step from just facet rough to include Tanzenite
cab rough.

The page now includes full color pictures of each rough
material. Stop buy and check it out. Thank you for the
support and suggestions.

MarkCase@aol.com
http://members.aol.com/markcase/citrine.htm or
http://members.aol.com/markcase/garnets.htm
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<MSG12>

Subject: AD: Take a Look


Take a look at our WebPage:
http://www.couponexpress.com/C/JadeDriveRockShop.html

Thanks BETTY and RUSS
jaderockshop@webtv.net
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