A mild convex grind will provide the greatest strength in the blade.
I think Ed has it right... and he's a guy who has made a lot of stuff that cuts like the devil! Ed: what would you think of doing one of these in 52100??
Of intrest to me though is the way so many people interpret making this style of knife. It's history is, in terms of time, just back over our shoulder a bit so you'd think there would be some early examples of them about made by people who read the book or his articles but; there are none that I know of. Sears was a popular writer and you would think somone/company would have ridden his coat tails on this. No one did. Yet now over a hundred years later, people are making his knife.
Fiddleback Forge comes closest to a major concern making a Sears' style knife, really nice ones at that.
George W. Sears (
http://www.oldjimbo.com/survival/racquette/nessmukbydale.html) designed the nessmuk and I've always wondered what he would have said the hump is for. It accomplishes the decreased angle of point used in many large game skinners but keeps said point more in centerline with the hafting which makes any knife more manageable and the "point" more usable: Marbles' "Woodcraft" comes to mind (Kabar made'em too). They are, save for removing the back part of the hump, a "nessy" at heart: was the Marbles design influenced by Sears' knife? They were contemporaries for sure.
But what did Sears' original nessmuk look like?, here is a page I found from his original book "Woodcraft"....I'm sure you've all seen it.
If indeed this is an artisit rendition of Sears' knife from his book, then clearly he liked the sine wave throughout the whole knife; the handle shape being an important part of the overall design and feel of the knife. Note the lanyard, and the tapered scandi grind. Sears had to have had some sway over the book's publication, surely he saw the engraving and approved it. So here we have an accurate profile, but how thick was the blade? And what is written on the double bit axe head? And lastly, are these three pieces of cutlery to scale?
Sears was one of ten children. Upon his death, someone recieved his effects. I wonder who got the knife. Perhaps as is the case with so much cutlery, it was just used until nothing was left of it.... or perhaps is sits to this day in some old trunk owned by one of his decendants who doesn't give a tinker's damn about knives.
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