[meteorite-list] Saw Blades

[Ed Deckert]

Hi List,

This is my opinion, but I believe it to be correct as it applies to cutting 
lapidary rough.  Regardless of which brand, and the method of bonding the 
diamonds to the blade core (bonded to the blade core by being plated, 
sintered, or welded to the core,) one should consider how the blade is being 
used before complaining about the short blade life they experience.  For 
example, dry cutting with a diamond blade that the manufacturer states must 
be used with a liquid coolant will typically shorten the useful life of that 
blade.  The diamonds overheat, crack, and will come off of the blade 
prematurely instead of simply wearing down.

If you apply too much pressure when cutting (pushing too hard when feeding 
the meteorite manually, or perhaps the autofeed mechanism on the saw is 
pushing too fast for the material being cut) - even when using coolant - the 
diamonds overheat and come off as when cutting dry, or are simply torn off 
by the pressure when feeding the material through the blade too quickly.

And then, different materials will tend to cut faster or slower than others. 
How about those blade-killing diamond-bearing Ureillites?  When pushing too 
hard, or cutting tougher/harder meteorites, two different people using the 
same brand and type of blade on the same meteorite can, and will experience 
different blade life depending on the material being cut and how quickly 
they try to get the job done.

Just my 2 cents.

Ed Deckert


----- Original Message ----- 
From: "Marcin Cimala - PolandMET" <marcin at meteoryt.net>
Cc: <meteorite-list at meteoritecentral.com>
Sent: Friday, May 07, 2010 4:10 PM
Subject: Re: [meteorite-list] Saw Blades


> From: <mail at mhmeteorites.com>
>> With sintered blades the diamonds are actually "cooked" in with the 
>> metallic alloys of the blade material, thus impregnating the diamonds 
>> into the rim of the blade. This creates a much longer-life and the 
>> sintering creates a more durable and stiffer metallic alloy.
>>
>> The non-sintered blades (pro-slicer) are made of basically, sheet-metal, 
>> and the diamonds are sprayed onto the rim.  Once the diamonds are 
>> removed, the blade is worthless.
>> Matt
>
> I cant agree with You.
> I use ONLY this "worthless" chinse diamond blades from ebay, this for 
> 4-6$/ blade. I make hundreds slices on each, single blade before I need to 
> change it becouse the rim with diamonds is basicaly
>
> losses completly into 0! I cant imagine to use any Pro-Slicer for 30-40$ 
> :)
> I even used only one blade to cut urelites. Ofcourse , each slice take 
> 30-50min to cut, but ... this blade do it. And my cut looses are very low.
>
> -----[ MARCIN CIMALA ]-----[ I.M.C.A.#3667 ]-----
> http://www.Meteoryty.pl             marcin(at)meteoryty.pl
> http://www.PolandMET.com       marcin(at)polandmet.com
> http://www.Gao-Guenie.com      GSM: +48 (793) 567667
> --------[ Member of Polish Meteoritical Society ]--------
>
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