Steel Heart differences

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Jan 1, 2006
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What is the difference between a standard steel heart, a heavy heart and a heavy ordnance steel heart (all fusion vintage)?

thanks
 
What is the difference between a standard steel heart, a heavy heart and a heavy ordnance steel heart (all fusion vintage)?

thanks

Thickness and grind.
FSH = .250 Sabre ground
HH = .270 Saber Ground
HOFSH = .3125 Flat Ground
MOASH = .340+ Flat Ground

I think???????
 
My FSH appears to be convex ground, but I've heard sabre ground too- does anyone know if they did it both ways?
 
From some of my blades the last time this came up....

FSH-standard - .248 Convex Grind
FSH-HH-magnum - .272 Saber Grind
HOGFSH - .332 Flat Grind
HOGFSHLE - .316 Flat Grind
SHSH (the precious) - .264 Flat Grind

My reference to 'Grind' is the primary, or side of the blade, grind. I judged these by using an index card placed against the side. If the card touched completely along it's edge - the grind is flat. If the card 'rocked' on it's edge, the grind is convex.

I also have noticed with the standard FSH, some have a grind with a smooth face, some have minute 'terracing' or 'cut' lines to facilitate the stock removal.

The edge angles on my standard FSH have all been convex.
I have HOGFSH with flat-grind edges.
I have FNMOASH with a flat-groud edge.
The edge on The Precious SHSH is flat, and asymmetrical.

I hope that this info helps!

Best regards,

John
 
a little bit of clarification -

the fsh is a full convex
the hh is saber flat


if your being picky, the fsh is actually a very very high convex saber, as the machining for the convex grind starts about an 1/8" down from the spine.



also, i've never gotten a knife from busse that had a flat ground edge - they have all been convexed. and i've gone through something like 20 seperate knives at 15 or so models, so im asumming its the standard.

flat ground cutting edges are what you get from apex edgepro systems, and consistent angle flat grinding surfaces. everything i've seen from busse looks like its done on a slight slack belt. i know its convex because every time i sharpen them down to 24 degree's per side or less i have to remove a good amount of metal, and it comes off the center of a curve, not off of the top of the cutting edges grind like it would if it was a flat ground cutting edge.



(this includes a shba, a custom shop ad and variant ad, cg sj and le sj, bme and mojo, sjtac and hoglesjtac, thin and thick nicks, hh, hogfsh, and moash among others, so it represents a pretty broad spectrum of periods and styles from busse)
 
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