Trouble with one of my lansky stones

BeagleMaster64 said:
The 70 grit stone feel and cuts about as fast as a 280 grit. Oh and a little off topic but not really is im reprofiling my BM 940-2 to 17 degrees per side with a 20 degree microbevel but i got done with the show side but the clip side is taking far longer
Click to expand...

If that BM 940-2 is S30V(?), invest in a diamond hone (Coarse/XC). $20 is cheap compared to what something else will cost you in time and results.

As small as the Lansky hones are, it's twice the handicap to try reprofiling with one of the regular hones (likely aluminum oxide) in a 1/2" x 4" working abrasive surface area. If it works at all, it'll take forever. I dished & glazed two of my regular Lansky hones in attempting the same task on a ZT in S30V. A medium diamond hone saved my day, finally trying it after about 6 hours of frustration with the other stones. One of the best learning experiences I've had, about vanadium carbides and wear resistance in S30V. But it was a painful & tiring lesson.

I'd be almost certain you're at least glazing your hone, which is why it's starting to feel 'slicker' than it's rated grit, and making things so much slower. And the hone will never work the same again on anything else you use it for, unless you recondition the surface of the stone. The vanadium carbides in the steel are about 30% harder than the aluminum oxide of the hone; so, the carbides are effectively polishing the grit in the hone ('glazing') and it won't cut anymore, when that happens.
 
BeagleMaster64 said:
The 70 grit stone feel and cuts about as fast as a 280 grit. Oh and a little off topic but not really is im reprofiling my BM 940-2 to 17 degrees per side with a 20 degree microbevel but i got done with the show side but the clip side is taking far longer
Click to expand...
Hi,
Do you have a nail or a pointy rock or a hacksaw blade ...?
If you take something pointy,
a nail or a screw (or just the tip of a knife you don't care about),
and scratch the surface of your lansky stone,
you can see the stone change color where you scratched (whiteish lines)

Make a few scratches on the stone, then go back to using it on knives
 
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