Didnt get a knife from Cobalt but i made one from Cobalt!!

[TewlMakr]

Had a little down time at work and ground this out of a cut off blade.
Thought i would post this to bide the time until the feeding starts tonight.
Come on Busse bunch bring us some vittles!!!!

 

[Lycosa]

Nice but... you need a point!

 

[Dennis in MA]

You finally get a chisel grind and you're complaining about a point? ROTFL!!!

 

[TewlMakr]

With a point it would have been way short. Good point though!! HA HA!!

 

[Lycosa]

DIM is correct. Send it to me please.

 

[mymindisamob]

You finally get a chisel grind and you're complaining about a point? ROTFL!!!

Ha, just what I was thinkin'.

 

[pioneertoo]

I'd call it the PB Warden (Peanut Butter Warden, stands up to the toughest, refrigerator-hardened stuff). Great work.

 

[Big Chris]

Looks good. I bet it was fun to grind, I know those cut off blades are harrrd. I have tried it myself a couple times but gave up before I got that far along.

 

[d762nato]

You finally get a chisel grind and you're complaining about a point? ROTFL!!!

GO...GO...GO...Rolf your Busse Chisel Point has arrived!!! Sorry i just could'nt resist.

 

[Lycosa]

KMK Doug.
What are the +'s of cobalt?

 

[Dennis in MA]

LOl. Good thread. Neat knife. Good nature of Lycosa. What a forum!

 

[Lycosa]

Thank mun!
Where's my answer??

 

[rbmcmjr]

What are the +'s of cobalt?

Almost impossible for it to rust in normal service conditions.

Non-magnetic, if that concerns you.

The carbon and molydenum carbides are very hard but carried within a softer overall cobalt matrix, so you get great edge retention in soft materials at the cost of reduced resistance to edge rolling when encountering hard stuff. Thus it is great as a skinner as long as you watch out for bones.

I have two cobalt alloy knives, both from Tom Krein. One is Talonite and the other is Stellite 6K. They differ slightly in composition but I can't really detect a difference.

Here is one based on the Dozier Yukon skinner pattern:

From Chuck Bybee's article on Talonite:

Talonite® is an alloy that is primarily cobalt and chrome with only a very small percent of iron in it. Steel is iron with a very little bit of carbon in it. (Iron with .1 - .3% carbon and a maximum of about 2.5%). Talonite® is very different than steel and cannot be compared one to one with steels. Talonite® has a lower Rockwell than some steels but it contains carbide grains. It is softer on a Rockwell test but much more wear resistant than steels. In addition to the hardness of the carbides it also has about a 30% greater lubricity. Talonite® can be sharpened to a razor edge as well as any other material, however it will cut much better than other materials with an equivalent edge because it is much slicker. Steels have a greater tendency to grab in the cut. The grabbing creates more work and dulls the edge faster.

 

[Lycosa]

RBM- Thanks for the information. :thumbup: