[meteorite-list] Cutting meteorites with CBN blade

From: David Pensenstadler <dfpens01_at_meteoritecentral.com>
Date: Fri, 23 Nov 2007 08:37:26 -0800 (PST)
Message-ID: <48930.78569.qm_at_web90303.mail.mud.yahoo.com>

Dear List:

Does anyone have any experience with cutting irons
with a Cubic Boron Nitride blade?

I purchased a 10-inch Pro-Slicer (10 x 0.012) CBN
blade from Lapidary Discounts in California and used
it to cut a 2 1/2 inch Nantan. It worked very well
for the first 10 cuts, then, very quuckly, started to
bind up indicating that the CBN was gone from the
blade. For the cost I expected to get much longer
life from it.

Any opinions on what kind of a life one can expect
from such a blade. Altogether I cut about 22 linear
inches before the blade was useless.

I think I followed good cutting practices, using pella
oil for lubrication, and feeding at a rate of about 1
inch every 5 minutes (0.2 inch per minute).
Motor speed was 1750 rpm.

Any ideas?

Dave


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Received on Fri 23 Nov 2007 11:37:26 AM PST