The Edge of my Envelope

Jerry Hossom

Jerry Hossom

Joined
Aug 1, 1999
Messages
3,036
The toughest one yet.

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This is the prototype for a similar Espada being done in CPM-3V. The blade here is 19-1/2" ATS-34 (differentially tempered), 25-1/2" OAL, weight 19-1/2 oz., 4" sharpened double grind behind point, stabilized Bocote handle. Very fast!

As you might guess from the weight, this is extremely deeply hollow-ground. The steel was 3/16". The most challenging part was the double grind at the point, since the whole weight of the blade was dangling to one side while I did that.

BTW, this blade can be easily flexed about 5" by hand. Not bad for that "brittle" ATS-34, huh?
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IMO, if it isn't heat treated by Paul Bos, it just isn't ATS-34.


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Jerry Hossom
www.hossom.com

[This message has been edited by GaKnife (edited 05-08-2000).]
 
Jerry, that is an awesome looking piece. Very, very nice! I guess this puts a big hole in the "brittle ATS 34" idea
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Your hollow grinds are amazing. I look forward to seeing you and your knives at Blade.

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Regards
Joshua "Kage" Calvert

"Move like Water, strike like Thunder..."
 
That is a beauty.

Now that is feeelllliiinn the groooove.
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Keep posting those pics they are real motivation.

Scott
 
It's all fun and games until you put an eye out...of the guy standing 5 feet away from you.

Awesome knife.

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"People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf."
George Orwell
 
Jerry,

You've done it again! Incredible length to weight ratio. This sword must break all land speed records! It must feel like a weightless extension of the hand.

Bravo!

Mario

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Gaucho

Tuvo muy mala suerte...se callo en mi cuchillo.


 
now that's one heck of a blade! i bet hanging branches don't stand a chance. i like it, maybe i'll try my hand at making a flat ground one?
 
No leg of lamb is safe from that! Maybe Gaucho needs to move up to a leg of Elephant & test it on it. I think it'll still be no contest
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.

Doug

[This message has been edited by Hart (edited 05-09-2000).]

[This message has been edited by Hart (edited 05-09-2000).]
 
Great stuff Jerry, I did up some short swords in ATS-34 and they actually worked pretty well. You going to have that puppy at the Blade Show?
 
Rob, that blade should be at the show, as well as a couple other, somewhat longer swords. I'm hoping to get the CPM-3V Espada done in time, but if I have to choose between it and about four knives (comparable amounts of time) it may not make it.

I'm really pleased with how ATS-34 is performing. The edges on my longer blades are at Rc57-58, and they are holding up extremely well. Gaucho just completed a review that included a repeat challenge to his ATS-34 bowie, using it as a benchmark, and it made it through 3" of bone without a ding, chip or roll.

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Jerry Hossom
www.hossom.com
 
Gorgeous knife Jerry...I'm looking forward to seeing it at the show. I didn't realize Paul was doing differential tempering on ATS-34...interesting.

Take care,

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Cecil Self
SELF Knives
Arrow-Dynamics Cutting Tools
www.arrow-dynamics.com
 
Geez Jerry, thats awesome!!! It sure looks like it would move fast. I can picture a roof block/angle one combo... Where is the balance point on the sword?

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"Come What May..."
 
Cecil, Paul doesn't do differential heat treating on ATS-34. He did this one only as a test. I understand it took a very long time to accomplish, and is not something he wants to do routinely.

Crayola, the sword balances right at the plunge line. It's actually a bit further forward than I was hoping, but I left more steel on the forward part of the spine to make room for the double grind at the front. That's likely why it's so far forward. Had I eliminated the double grind, I probably could have ground a finer blade near the point and moved the balance back a half inch or so. I also tapered the tang a little, just to remove weight. Had I left it full thickness, the blade would have weighed a couple ounces more, but I'd have gotten the balance back a good bit. Generally, I favor weight removal whenever possible, so long as it doesn't compromise integrity.

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Jerry Hossom
www.hossom.com
 
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