[meteorite-list] Fw: wire saw cost (Benefits of the wire overblade?)

From: Michael Gilmer <meteoritemike_at_meteoritecentral.com>
Date: Thu, 10 Mar 2011 21:53:41 -0500
Message-ID: <AANLkTi=CT_FahWmbJLV-U1k7NFibSSuHzAs=XhKaChNQ_at_mail.gmail.com>

That reminds me of the time I was slicing an indochinite into thin
transparent slices. Several slices came out very well. But, about
half-way through the slicing, the remaining endcut caught on the blade
and was hurled into the ceiling, where it shattered and showered me
with glassy shards. Luckily, it didn't hit me in the face. I still
cut glassy materials like tektites, but I am much more careful now
when doing it. LOL


On 3/10/11, mail at mhmeteorites.com <mail at mhmeteorites.com> wrote:
> Also the wire saw has industrial uses a lap saw couldn't handle. We have cut
> big pure silicon blocks (6" tall) at 0.5mm thickness. Or how about a 5" x
> 12" block of spinel that costs 25,000, cut at 0.25mm thickness. A lap saw
> would eat this material and send shards of glass everywhere. When
> companies need thin slices with minimal loss they call on the wire saw.
> Matt
> ------------------------
> Matt Morgan
> Mile High Meteorites
> http://www.mhmeteorites.com
> P.O. Box 151293
> Lakewood, CO 80215
>
> -----Original Message-----
> From: mail at mhmeteorites.com
> Sender: meteorite-list-bounces at meteoritecentral.com
> Date: Fri, 11 Mar 2011 02:34:53
> To: Michael Gilmer<meteoritemike at gmail.com>;
> <meteorite-list-bounces at meteoritecentral.com>; Greg
> Hupe<gmhupe at centurylink.net>
> Reply-To: mail at mhmeteorites.com
> Cc: <meteorite-list at meteoritecentral.com>; Andr??
> Moutinho<moutinho at bol.com.br>
> Subject: Re: [meteorite-list] wire saw cost (Benefits of the wire
> overblade?)
>
> 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 <meteoritemike at gmail.com>
> Sender: meteorite-list-bounces at meteoritecentral.com
> Date: Thu, 10 Mar 2011 21:28:02
> To: Greg Hupe<gmhupe at centurylink.net>
> Cc: <meteorite-list at meteoritecentral.com>; Andr??
> Moutinho<moutinho at 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
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>
> On 3/10/11, Greg Hupe <gmhupe at 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
>> gmhupe at centurylink.net
>> www.LunarRock.com
>> IMCA 3163
>> ====================
>>
>> -----Original Message-----
>> From: Andr? Moutinho
>> Sent: Thursday, March 10, 2011 5:59 PM
>> To: meteorite-list at 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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>
>
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-- 
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Mike Gilmer - Galactic Stone & Ironworks Meteorites
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Received on Thu 10 Mar 2011 09:53:41 PM PST