convex bk?

bladesmith3

bladesmith3

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is there now or has there ever been factory beckers with convex ground blades? if not? why not? I made my bk2 full convex and I love it. I tried to search for the answer but wound up asking here.
 
Some old cincin and blackjack campanions were convex. So was the blackjack magnum camp. If you read some of the old blackjack ads they "say" the brute and kukri were convex but I'm not to sure I believe them on that. I could maybe call the grind they did on some of the brutes convex, but a for sure no on the kukri they were putting out.
 
665225ff.jpg br resq 5.jpg

In one of these it even says the brute is .270" thick and made out of 440, but I've never seen that either.
 
wow thanks. I love reading these old reviews and articles. I am going to have to take classes on researching all of this stuff.
 
It takes more time to properly convex grind (not just a convex edge). That means a higher price. Also, many people are baffled by convex grinds.
 
What is the difference in a factory full convex and a full flat ground knife with a convex edge?
 
rscornutt said:
If it is rounded rather than having abrupt shoulders, probably so.
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I am aware of this. I mean no disrespect, but perhaps you do not understand my question. What is the difference in for instance the full height convex grind of a bark river, and a Becker bk16 with a V that has been convexed.
 
Dr Rez said:
I am aware of this. I mean no disrespect, but perhaps you do not understand my question. What is the difference in for instance the full height convex grind of a bark river, and a Becker bk16 with a V that has been convexed.
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Blade geometry. I'm not home so I can't put pictures up, but the geometry on my BK16 is completely different than that of my Bark River Bushcrafter with a full height convex.
 
bladesmith3 said:
is there now or has there ever been factory beckers with convex ground blades? if not? why not? I made my bk2 full convex and I love it. I tried to search for the answer but wound up asking here.
Click to expand...

how long per knife to convex it?

short of a specialized cnc machine, doing it by hand it not worth the effort for most knife companies, unless you pay for it.

back in the day, it was a thing. for sure. i have quite a few. i fix them myself as i can, as i need.
 
Dr Rez said:
I am aware of this. I mean no disrespect, but perhaps you do not understand my question. What is the difference in for instance the full height convex grind of a bark river, and a Becker bk16 with a V that has been convexed.
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Think of the difference like this, a full height convex if you look at it from the point looks like an apple seed. Where with the Beckers they look like a V.
 
Dr Rez said:
What is the difference in a factory full convex and a full flat ground knife with a convex edge?
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For one, if you start with same stock thickness, you get stronger blade because you retain more material without losing much (or nothing at all) in how knife cuts/slices. Through some materials it will cut even better because blade won't stick as much. So, if done properly, convex grind is generally preferred over FFG.

If you just convex your edge on FFG (without changing the angle), it will cut better, but you lose some strength, because you remove material at the edge shoulder. Also, it won't change the way primary grind binds, or how it pushes stuff away when cutting through thicker stuff, it's still FFG.
 
the main difference is about $50-75 in factory cost ;)
 
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