BM Osborn 940 - sharpening technique ?

[baddogdave]

I have a new Benchmade 940. (This is my fist Benchmade and is the Oct 2000 KOTM) I plan on it being my daily carry and will try not to worry about it being a possible "collectible".

I have a Lanskey sharpening system and would appreciate any suggestions on best angle to use, or alternate techniques that worked for you. Not sure the spine will work well with the Lanskey. I also have Carborundum stones and ceramic sticks. I don't really want to buy a new system.

A "how to make the 940 perform" type piece like I had seen about another BM blade design would be excellent if such a string exists, just point me to it. I did not see it listed but I may have missed it.

Hope you all get the knives you want this year!!!!!

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Baddogdave says "Life is
hard,so carry a good knife"

 

[phatch]

I use a sharpmaker on mine with the standard 20 degree angles. That angle has worked well so far. A drop to 19 would probably be worth it if your equipment does that.

I do have a little trouble sharpening the quick sweep of the belly and out to tip as well as I can sharpen more "normal" shapes.

It's just a lot of angle changes pretty quick to rotate through on the stones. And as it hasn't needed much sharpening, I haven't developed a skillful technique for this shape yet.

 

[alfalfa]

baddogdave,

Congrat's on your new knife! I have a 940bt, and they sure are sweet knives.

As far as sharpening goes...I use the 40 degree setting on my sharpmaker 204, and it works great. Good luck.

 

[Codeman]

If you ignore the portions about the recurve, Joe Talmadge's post ( http://www.bladeforums.com/ubb/Forum3/HTML/000560.html ) about making the 710 perform is right on. I've used that technique on my 710, 705BT, and 940BT, as well as most of my other knives. It works great. I did take the time to re-profile to the 204's 30/40 bevels, but that's just me.

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Knowledge without understanding is knowledge wasted.
Understanding without knowledge is a rare gift - but not an impossibility.
For the impossible is always possible through faith. - Bathroom graffiti, gas station, Grey, TN, Dec, 1988

AKTI Member #A000831

[This message has been edited by Codeman (edited 01-03-2001).]

 

[Sergiusz Mitin]

Baddogdave,
Welcome to the Forums!

BENCHMADE Model 940 Osborne has no flat area at the middle of blade length to fix it in Lansky clamp properly. So it can cause noticeable problems to use this or similar sharpening device. I think you can use any kind of V-style rod sharpening system, SPYDERCO Tri-Angle Sharpmaker probably is the best and the most advanced among them. Or use a decent set of bench stones for free hand sharpening.

If your Osborne is as sharp as mine was out of factory box I would advise to leave factory sharpening angle. To improve noticeably cutting performance you could add the decent back bevel to your factory edge.

 

[Gene]

Dave,
I agree with the others but try this. I don't have an BM Osborne but sometimes this works with a false edge with the Lansky. Cut a thin piece of rubber, soft leather, etc., (something that will grab). Cut the piece just large enough to wrap around the knife's spine/false edge. Clamp down the Lansky and see if it holds the knife straight. Has worked sometimes for me. As with all sharpening systems, don't press down hard. Let the stones do the work.