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This list digest contains the following message subjects:

1. LapDigest News for Issue No. 140 - Monday 5/4/98
2. NEW: Utah Jasper
3. Re: Lapidary Clubs in Long Island NY Area
4. RE: Drilling Stones
5. RE: Drilling Stones
6. RE: Drilling Stones
7. RE: A Possible Cheap and Safe Cutting Oil
8. BIO: Richard Peery


Subject: LapDigest News for Issue No. 140 - Monday 5/4/98

Next issue will be Saturday 5/9, or Sunday 5/10. If anyone
on the list does channel work and has some copyright-free
patterns, please send them to me for the use by the whole

Three upcoming topics are: sphere-making, lapidary books and
channel work. If you have any comments of any of these,
please send them to me. If you cut spheres, also please let
me know and I will put you on my list of sphere-cutters!

I am leaving tomorrow for Hilton Head SC for a few days in
the sun and surf and sand.... The computer will be left on
and my son will check from time to time to make sure that
Bill Gates has not done it to us yet again! So the archives
are available to you while I am gone.

Meanwhile, you-all stay safe but have a G R E A T time!!


Subject: NEW: Utah Jasper

Wondering if anyone has any info on the "Utah Jasper"
pictured on page 275 of the Lapidary Journal Buyers Guide?

Craig Nielson

Subject: Re: Lapidary Clubs in Long Island NY Area

For a list in Long Island or any other part of the US, see
the list put together by Albert Zabinski:

Also, for a list of web sites for US and Canadian mineral
societiesnand associations, see the Culver City Rock Club
links page I put together at


Keep on pickin!

Brad Smith
Los Angeles

Subject: RE: Drilling Stones

Amazing no one said anything about sintered diamond drill
bits as opposed to plated! Sintered is a process where they
fuse the diamonds into the metal all the way through. You can
even drill dry, no lubricant. Not that that is smart, but you
can, the plating does not come off, the diamonds just wear

Mark Liccini

Subject: RE: Drilling Stones

I don't know if it works with stones, but to prevent
reverse-side chipping when drill breaks through, when
drilling glass, you put another piece of glass under the
piece you are drilling. This is called 'fooling the drill',
it doesn't know when one piece of glass ends and another

>From the home of Show and Sell Velcro roll up Display pads.

Noncommercial republish permission granted.

Subject: RE: Drilling Stones

I have been plagued with drilling stones for many years and
the ultrasonic drill was undoubtedly the quickest I have used
...if you excuse the time tuning the thing and the soldering
of the needles onto the horns and most important if you can
tolerate the noise. The 50,000 strokes per minute seems to be
close to my pain threshold. Fun though for making square
holes and impressions of pennies in rocks.

I have also used a reciprocating lapidary hammer drill,
noisy, slow and limited application, great for slabs. I
have a huge collection of dental bits...NO NO NO these are
free! NEVER buy them. A dentist will only use new ones and
he doesn't use then on anything that will dull them, he
throws them away! Stop him from doing this. Most dentists
will oblige, boil them if you're scared or clumsy. I use
these bits for shaping and enlarging holes, not for drilling.

The only drills that I can afford to use commercially are
diamond core drills. They cost me $9 CAN each and are
available in 1.5mm to 3.00mm. These will go through 5mm of
agate in about 2 minutes when new. I sharpen them by drilling
into a piece of grinding wheel. I get mine from any of the
local jewellers tool supply stores; my local rock shops don't
carry them. I charge a minimum of $10 to drill and multiple
holes are usually around $2-$3 each depending on depth and

Anthony L. Lloyd-Rees
web site:

non-commercial republish permission granted

Subject: RE: A Possible Cheap and Safe Cutting Oil

<<It is my understanding that antifreeze is a carcinogen. I
would read the warning labels VERY CAREFULLY before using it
in a saw.>>

The Food and Drug Administration (FDA) has classified
propylene glycol as an additive that is "generally recognized
as safe" for use in food. It is used to absorb extra water
and maintain moisture in certain medicines, cosmetics, or
food products. It is a solvent for food colors and flavors.

Look at for
more info.


{May be copied for noncommercial uses}
(Ed.Note: But the original warning was correct for ethylene
glycol, the type of antifreeze we use in our cars. It is bad
stuff! hale)

Subject: BIO: Richard Peery

I am a novice in lapidary, in January of this year was
fortunate enough to purchase a Genie, Ultra Tec Faceter and a
10" Raytec saw plus all the other paraphernalia, well I've
been saving all my life, I'm 65 now, so it now or never.

I don't care what they say about Hale, it's all true, I had
the pleasure to meet him at WildAcres last week, not only is
he handsome, talented and darn good instructor, I won't
comment on his singing.

I'm looking forward to receiving the Digest, it sure does
contain some great info. Hale deserves a great amount of
credit for the job He's doing with the Digest.

Richard (Dick) Peery
(Ed. Note: The check is in the mail, Dick!)

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