[meteorite-list] Another question for the Saw Wizards

[David Pensenstadler]

I have used CBN blades and they do not last very long.  I cut a total of 22 inches of meteorites with a blade that cost nearly $100.

Unfortunately, there are not too many other choices, especially for irons.

Dave

--- On Wed, 7/1/09, R N Hartman <rhartman04 at earthlink.net> wrote:


> From: R N Hartman <rhartman04 at earthlink.net>

> Subject: Re: [meteorite-list] Another question for the Saw Wizards

> To: "Galactic Stone & Ironworks" <meteoritemike at gmail.com>

> Cc: "Meteorite Central" <meteorite-list at meteoritecentral.com>

> Date: Wednesday, July 1, 2009, 2:51 PM

> There are different quality blades

> (quantity of diamonds per unit, in the blade), and also

> various rim configurations.  Performance varies with

> brand also.  I think the blade is wearing out when you

> are seeing less even cuts, unless something is wearing in

> the saw itself.  As I have experienced it, the CBN

> blades are best and primarily for cutting irons.

> 

> Ron

> 

> ----- Original Message ----- From: "Galactic Stone &

> Ironworks" <meteoritemike at gmail.com>

> To: "R N Hartman" <rhartman04 at earthlink.net>

> Cc: "Meteorite List" <meteorite-list at meteoritecentral.com>

> Sent: Tuesday, June 30, 2009 6:52 PM

> Subject: Re: [meteorite-list] Another question for the Saw

> Wizards

> 

> 

> > Hi Ron and List,

> > 

> > I noticed that about the blade sanding it's way

> through the specimen.

> > The first slices I made were the smoothest and the

> prettiest.  Now,

> > after many cuts, the blade is leaving more noticeable

> saw marks.

> > 

> > The blade I am using is the stock/default blade that

> came with the

> > saw, so I don't know how good it really is,

> quality-wise.  I have

> > another blade sold specifically to cut meteorites,

> it's the same

> > thickness but the blade is brown-colored instead of

> reflective bare

> > metal.  It's also a CBN, which comes highly

> recommended.  I wanted to

> > practice with the stock blade before moving on to the

> CBN.  I also

> > have an extremely thin and floppy diamond blade called

> a laser

> > "dia-cut" which I  haven't used yet either.

> > 

> > Best regards,

> > 

> > MikeG

> > 

> > 

> > On 6/30/09, R N Hartman <rhartman04 at earthlink.net>

> wrote:

> >> That because a Diamond blade (but not all!) with

> the very fine continuous

> >> diamond mesh does not cut, it "sands".  It

> sands its way right through your

> >> tough iron meteorite and if your saw is running

> smoothly it will give your

> >> slice a high polish as it finishes the cut. 

> If you have some issues with

> >> the straightness of the blade or continuous feed,

> etc. you may get grooves,

> >> which is a sad problem!

> >> 

> >> Ron Hartman

> >> 

> >> Disclaimer:  Use of this information, I am

> not responsible for lost fingers,

> >> noses or toes!

> >> 

> >> ----- Original Message -----

> >> From: "Mr EMan" <mstreman53 at yahoo.com>

> >> To: "Meteorite List" <meteorite-list at meteoritecentral.com>;

> "Galactic Stone

> >> & Ironworks" <meteoritemike at gmail.com>

> >> Sent: Tuesday, June 30, 2009 4:18 PM

> >> Subject: Re: [meteorite-list] Another question for

> the Saw Wizards

> >> 

> >> 

> >> 

> >> Last time I cut with a diamond blade it only would

> cut the nail and not the

> >> skin--wanna give it a try and see if thinner

> blades can cut skin?

> >> 

> >> Mike they make a slab holder/jig which comes in

> few sizes that lets you cut

> >> down below 10mm or so. Once you clamp the stone in

> the jig you clamp it in

> >> your saw vice. $20-30 on ebay.

> >> 

> >> Elton

> >> 

> >> --- On Tue, 6/30/09, Galactic Stone &

> Ironworks <meteoritemike at gmail.com>

> >> wrote:

> >> 

> >>> Hi Listees and Stonecutters!

> >>> 

> >>> After using my saw on several occasions now, I

> wanted to

> >>> share a

> >>> recent experience and ask a related question.

> >>> 

> >>> While cutting a small unclassified NWA stone

> about the size

> >>> of a

> >>> walnut, my stepson showed up and started

> >>> watching. It made him

> >>> extremely nervous watching me handhold the

> small stone

> >>> while I cut it.

> >>>  Apparently seeing my unprotected fingers

> a half-inch away

> >>> from a

> >>> spinning diamond blade was too much to bear.

> He is

> >>> absolutely

> >>> convinced I am going to cut a finger off.

> (Shows how

> >>> much confidence

> >>> he has in me!) LOL

> >>> 

> >>> He asked why I don't use some kind of jig or

> holder that

> >>> will hold the

> >>> stone for me. I showed him my rock vise, which

> is

> >>> made for use with

> >>> this particular saw. But the vise is only good

> for

> >>> larger stones, or

> >>> elongated stones. It's not much good for

> holding very

> >>> small

> >>> acorn-sized or walnut-sized stones. So, I

> bravely go

> >>> where no fingers

> >>> should go. He asked what I would do if I cut

> off my

> >>> finger, and I

> >>> nonchalantly said I would drive myself to the

> nearest

> >>> emergency room,

> >>> wait my turn, get it sewed back on, and then

> go home with a

> >>> big

> >>> bandaged hand and type a one-handed email to

> the list about

> >>> the

> >>> episode. ;)

> >>> 

> >>> So, my question is - how do you cut very small

> stones on a

> >>> 6" lapidary

> >>> saw? Do you hand hold them? Do you use some

> >>> kind of jig? And how

> >>> many digits do you still have on your hands?

> >>> 

> >>> Honestly, I am not terribly worried about it.

> I am

> >>> experienced with

> >>> power tools and saws, so I'm not being

> reckless. But

> >>> if there is

> >>> something I can do to make my wife and family

> feel better

> >>> about it,

> >>> I'd do it.

> >>> 

> >>> Best regards,

> >>> 

> >>> 10-Fingered Mike (for now)

> >>> 

> >>> 

> >>> --

> >>>

> .........................................................

> >>> Michael Gilmer (Louisiana, USA)

> >>> Member of the Meteoritical Society.

> >>> Member of the Bayou Region Stargazers

> Network.

> >>> Websites - http://www.galactic-stone.com and http://www.glassthrower.com

> >>>

> ..........................................................

> >>>

> ______________________________________________

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> >>> Meteorite-list at meteoritecentral.com

> >>> http://six.pairlist.net/mailman/listinfo/meteorite-list

> >>> 

> >> ______________________________________________

> >> http://www.meteoritecentral.com

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> >> Meteorite-list at meteoritecentral.com

> >> http://six.pairlist.net/mailman/listinfo/meteorite-list

> >> 

> >> 

> > 

> > 

> > --

> .........................................................

> > Michael Gilmer (Louisiana, USA)

> > Member of the Meteoritical Society.

> > Member of the Bayou Region Stargazers Network.

> > Websites - http://www.galactic-stone.com and http://www.glassthrower.com

> >

> .......................................................... 

> 

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