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PostPosted: Thu Oct 05, 2017 10:53 pm 
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Hello everyone,
I have mostly used modern Kukri's like HI and similar, however recently I picked up a Bhojpure from Atlanta Cutlery and made a traditional handle for it. While using it to chop wood it went noticeably deeper into the hardwood as compared to my other Kukuris.

Attachment:
IMG_20170619_102720.jpg
IMG_20170619_102720.jpg [ 4.63 MiB | Viewed 211 times ]


I think the reason is the way that the Bhojpure blade angles down from the thick spine and then back up again to create the shoulder edge. My other ones are heavier but the edge shoulder is thicker and does not taper to the spine at all. Is there a name or terminology for this type of grind? It's almost like one big fuller along the entire blade, the thick spine on one side and slightly thicker shoulder edge on the other. It seems like this was not only designed on purpose but really effective! Anyway, I was just curious and thanks for reading.
Take care,
Jim


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PostPosted: Fri Oct 06, 2017 8:05 am 
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Hi Jim,

I think your observations on grind are 100% correct. I dare say knife makers have a name or description for it, Personaly Id
describe it in the manner youve done.

Looks like you got a good one there and nice to see it bieng used for what it was made for!

Thanks for sharing.

Spiral


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PostPosted: Fri Oct 06, 2017 9:34 am 
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Congratulations on your handle skills. That looks good and I have more than a suspicion that it works well too.

Many thanks for sharing your kukri
Captain

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PARTING THE CLOUDS SEEKING THE WAY
Everyone is entitled to their own opinions not their own facts


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PostPosted: Sun Oct 29, 2017 6:26 pm 
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Gentlemen,

I do believe that most Knife Makers, refer to this as a Convex Grind.

I may be wrong.

Regards,
SP


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PostPosted: Sun Oct 29, 2017 8:06 pm 
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Thank you, for making me stop & think!

Yes, It is convex ground I expect, but that is just the edge bevel geometry.

The quote " blade angles down from the thick spine and then back up again to create the shoulder edge." Implies hollow forged or ground as well.

In other words..The hollowing of the blade sides between the more swollen spine and ridge at top of blade bevel.

Meaning very little friction in deep cut in timber or indeed any other medium.

So several things going on in the old blade to get the end result, I think.


Spiral


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PostPosted: Wed Nov 01, 2017 7:32 am 
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Image


A Quick Reference to the Knife Grinds.

Regards,
SP


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PostPosted: Wed Nov 01, 2017 8:29 am 
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Thank you. Your drawing may help people who have no awareness of the terms.

Some blades can be entirely convex ground.This one isnt.

Just the bevel is. You will find most kukri have edge bevels. The seperatle angled piece in last 5mm to 15mm of blade edge.}

Above the bevel it is hollow forged or ground.

Ill draw you a picture later to illustrate.....

Spiral


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PostPosted: Thu Nov 02, 2017 2:31 am 
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Hi All,

I believe the edge described (flaring out from the hollow grind below the spine) is called a reinforced edge. That type of edge is quite noticeable in a lot of the khukri I have but I don't see it in the picture of the blade in this thread so I may be wrong.

Sincerely,
Till


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PostPosted: Thu Nov 02, 2017 8:40 am 
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That makes sense to me Till, That sounds like what Rockfarm describes..

Cheers.

spiral


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PostPosted: Thu Nov 02, 2017 7:37 pm 
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Dear Spiral,

Will wait for your diagram. Im sure it will help me better understand the blade geometry.

Regards,
SP


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PostPosted: Thu Nov 02, 2017 10:14 pm 
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Heres a poor attempt to demonstrate cross sectional features on many kukri, and alluding to what Rockfarm stated... {I think!}

I think its one for the tate gallery realy... :oops:

Cheers,
Spiral


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blade.PNG
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PostPosted: Fri Nov 03, 2017 12:41 am 
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Spiral,

Your drawing is what I have been told is a reinforced edge.

Sincerely,
Till


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PostPosted: Fri Nov 03, 2017 8:39 am 
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I'm a bit late as Spiral has already done a good sketch, but in sword cross sections it's referred to as a broad fuller profile (bottom right).

Attachment:
sword-cross-section.jpg
sword-cross-section.jpg [ 57.84 KiB | Viewed 83 times ]


As a point of note, I think all of my antique kukri have a V grind from the shoulder (one lambendha is a full flat / sabre grind) but the 4 modern kukri I've owned have all been convex grind. Perhaps a reflection of the switch from grinding wheels to belt sanders?


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PostPosted: Fri Nov 03, 2017 8:50 am 
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Indeed Till! Sounds right to me! It does reinforce the edge.

I think one could also use the word shoulder. As in the shouldered edge reinforces the blade edge.

So I Think my favourite descriptor so far is...

Hollow forged concave blade with a raised shoulder with convex bevel sharpening and a peaked spine! :lol: {And thats not even mentioning its a kukri!} :roll:

Spiral


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PostPosted: Mon Nov 06, 2017 9:19 pm 
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Thanks for the Diagram.

Hollow forged concave blade with a raised shoulder with convex bevel sharpening and a peaked spine!

Now that is a great description :D :D :D :D :lol: :lol: :lol: :lol:


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