Interesting discussion regarding cutting. I did not realize the equipment can be so expensive.

-Walter
----- Original Message ----- From: "Michael Gilmer" <meteoritem...@gmail.com>
To: <m...@mhmeteorites.com>
Cc: <meteorite-list-boun...@meteoritecentral.com>; <meteorite-list@meteoritecentral.com>
Sent: Thursday, March 10, 2011 10:05 PM
Subject: Re: [meteorite-list] wire saw cost (Benefits of the wire overblade?)


Hi Matt,

That is one impressive piece of machinery.  At $65k, I think I'll wait
until Christmas-time to ask for one.  :)

Best regards,

MikeG

----------------------------------------------------------------------
Mike Gilmer - Galactic Stone & Ironworks Meteorites

Website - http://www.galactic-stone.com
Facebook - http://www.facebook.com/galacticstone
News Feed - http://www.galactic-stone.com/rss/126516
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On 3/10/11, m...@mhmeteorites.com <m...@mhmeteorites.com> wrote:
I have a photo of a multi-wire saw we sometimes use on Kerfindustries.com (a business of mine). The one we own is a single wire saw that costs about 65k
new.

Coolant can be either distilled water, distilled water with a surfactant
(for wire longevity), alcohol (yes!!), mineral oil, or compressed air
(difficult). The coolant is fed by a standard pond circulation pump into the
saw and is recycled.
Matt
------------------------
Matt Morgan
Mile High Meteorites
http://www.mhmeteorites.com
P.O. Box 151293
Lakewood, CO 80215

-----Original Message-----
From: Michael Gilmer <meteoritem...@gmail.com>
Date: Thu, 10 Mar 2011 21:50:04
To: <m...@mhmeteorites.com>
Cc: <meteorite-list-boun...@meteoritecentral.com>; Greg
Hupe<gmh...@centurylink.net>; <meteorite-list@meteoritecentral.com>; André
Moutinho<mouti...@bol.com.br>
Subject: Re: [meteorite-list] wire saw cost (Benefits of the wire
overblade?)

Hi Matt,

Thanks for the explanation.  Do you have a photo of the wire-saw
setup, or is there a photo of one somewhere on the web?  I'm curious
to see what it looks like.

Being able to cut a large 6x6x18 specimen using a wire as thin as
.009" is a definite advantage over using a conventional lap saw that
is big enough to handle a specimen that large.

I am assuming the wire-saw also uses a coolant?  Does it have a big
tank for the coolant or can you hook it up directly to a water source
like a tap?

Sorry for all the questions.  It's late, I'm bored, and I'm curious.  :)

Best regards,

MikeG


----------------------------------------------------------------------
Mike Gilmer - Galactic Stone & Ironworks Meteorites

Website - http://www.galactic-stone.com
Facebook - http://www.facebook.com/galacticstone
News Feed - http://www.galactic-stone.com/rss/126516
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-----------------------------------------------------------------------



On 3/10/11, m...@mhmeteorites.com <m...@mhmeteorites.com> wrote:
We can cut a 6" x 6 " x 18" piece with a 250 um wire. A skinny lap blade
that is 6", you can cut 3", maybe, if you don't use a rotisserie.
250 um is 0.009". On avg we lose 9 percent, but that depends on the depth
of
cut, thickness of cut, wire diameter, material, etc. It definitely has
advantages over a lap saw. I have cut hundreds of meteorites over my 15+
years and really like the wire saw for rare materials.  Plus it is pretty
easy to mount an odd-shaped rock on the wire saw as compared to a vise on
the lap saw, wich can be VERY problematic.
Matt
------------------------
Matt Morgan
Mile High Meteorites
http://www.mhmeteorites.com
P.O. Box 151293
Lakewood, CO 80215

-----Original Message-----
From: Michael Gilmer <meteoritem...@gmail.com>
Sender: meteorite-list-boun...@meteoritecentral.com
Date: Thu, 10 Mar 2011 21:28:02
To: Greg Hupe<gmh...@centurylink.net>
Cc: <meteorite-list@meteoritecentral.com>; André
Moutinho<mouti...@bol.com.br>
Subject: Re: [meteorite-list] wire saw cost (Benefits of the wire over
blade?)

Hi List,

Can someone tell me what the advantage of a diamond wire saw is, over
a conventional lap saw blade?  I'm curious, because I have never used
a wire saw or seen one in operation.

I have seen slices made by a wire saw and they didn't look any
different (better or worse) than slices made with a blade.  One minor
difference I did notice was the markings left on the unpolished
slices.  Blades make distinctive arc-shaped "saw marks" on the
specimen, which must be polished out.  The rough wire-cut slices that
I handled also had saw marks on them, but the marks were different in
depth and orientation.  After polishing, I could see no difference.

So, is the advantage that the wire saw generates less loss?  (if so,
compared to what?)  Like I said in my previous post, cutting loss is
in direction relation to the size of the saw being used and the
thickness of the blade - assuming the cutter is skilled.  A wire saw
might generate less waste in comparison to a 10" lap saw using a .040"
blade, but I don't see how the wire saw can generate less waste than a
smaller lap saw using a blade that is the same thickness as the wire
used in a wire saw.  All things being equal, shouldn't the amount of
loss be dependent almost solely on the thickness of the blade or wire
used?

I am guessing that the main advantage is cutting large specimens - a
large specimen requires a large lap saw and a large blade.  If a
specimen can only be cut on a 10 or 12" lap saw, or a wire saw, then
the wire saw seems like a no-brainer.  But for a smaller meteorite
that can be cut with a .012" blade (or .006"), what is the advantage
of the wire saw?  Can the wire saw make thinner slices?

I'm not knocking the wire saw, just trying to understand the
advantages over a conventional lap saw.

Best regards,

MikeG


----------------------------------------------------------------------
Mike Gilmer - Galactic Stone & Ironworks Meteorites

Website - http://www.galactic-stone.com
Facebook - http://www.facebook.com/galacticstone
News Feed - http://www.galactic-stone.com/rss/126516
Twitter - http://twitter.com/galacticstone
EOM - http://www.encyclopedia-of-meteorites.com/collection.aspx?id=1564
-----------------------------------------------------------------------

On 3/10/11, Greg Hupe <gmh...@centurylink.net> wrote:
Hello All,

I don't think the value per gram is the only consideration for deciding
to
hire someone to cut your material with a wire saw. I am selling slices
of
my
Impact Melt Breccia for $7.50 per gram. It isn't really about how
expensive
the material is, sometimes it is the quality of the slices and
presentation
for collectors that is even more important!

Just my 2 slices worth... :)

Best Regards,
Greg

====================
Greg Hupe
The Hupe Collection
gmh...@centurylink.net
www.LunarRock.com
IMCA 3163
====================

-----Original Message-----
From: André Moutinho
Sent: Thursday, March 10, 2011 5:59 PM
To: meteorite-list@meteoritecentral.com
Subject: [meteorite-list] wire saw cost

Hello,

Does anyone can give me an idea of cutting cost using a wire saw to cut
a
300g ordinary chondrite into 3mm slices?

Thanks!
Andre
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