Chopper 80CRV2 - 2x4 chopping test 3 minutes video

BluntCut MetalWorks

BluntCut MetalWorks

Knifemaker / Craftsman / Service Provider
Joined
Apr 28, 2012
Messages
3,462
Bladesports + flares specs: Incidentally made knife

1/4" 80CRV2 (src from NJSteelBaron)
16.5" OAL, 10" edge
Ht with Super Quenched, final hardness 59RC
Polish sharpened edge angle between 23 to 25 inclusive degree
0.018" thick behind the edge
1 lbs 9 oz (716 gram)
Coolibah Burl handle

chopper 0.25 inch thick 80crv2.jpg

Chop: 2 times 2x4 Douglas Fir board
Note: Time & Chop-count can be improve with more practice (this is my 4th tried). And a better setup would help too :)

[video=youtube_share;oorElOam2Ws]http://youtu.be/oorElOam2Ws[/video]

Thanks for watching & comments
 
Thanks Jay!

JayGoliath said:
Nice chops!

Reminds me of the Martindale Golok and O'Katz handmade handle.
Click to expand...

Here's my thinner chopper

Forged 0.14" CruForgeV (src from Alpha Knife Suppy)
17.5" OAL, 11.5" edge
Ht with Super Quenched, final hardness 54RC
Sharpened edge angle around 30 inclusive degree
15 oz (426 gram)
Figured Bubinga handle
cruv chopper.jpg

Thanks for watching & comments.
[video=youtube_share;ZQez83LlV1o]http://youtu.be/ZQez83LlV1o[/video]
 
17.5", 15Oz. Wow that's an excellent combo.

I noticed some nicks on the edge. Could it be that the edge is too thin?
I'm surprised it's only at HRC54.
 
Thanks!

The nick/chip caused by bad hammer blows & perhaps overly cool edge while forging. It was micro chipping at 58rc when cross grain chops knotty dry olive branches so I temper it down toward 56rc, brain decided to add 40 minutes temper time, dumb finger pushed 40F degree increased :o Oh well, since edge stability & retention are excellent, so a handle got put on without hesitation. My next CruV choppers will aim for at least 58RC. My smaller CruV knives ran & stable around 62-63rc.

JayGoliath said:
17.5", 15Oz. Wow that's an excellent combo.

I noticed some nicks on the edge. Could it be that the edge is too thin?
I'm surprised it's only at HRC54.
Click to expand...
 
Thanks Chris!

I only chopped up 2 boards out of 8 I told you. I need a setup where I can left-chop (swing toward the left side) at an angle similar to right-chop; with the current setup - vertical chop is an instinct for self (left arm) preservation :)

Chris "Anagarika";13981781 said:
Bluntcut,

Impressive 80Cr, newsprint slicing after chopping! :thumbup:

You also seemed to enjoy decimating the 2x4 :D
Click to expand...

I wonder how a 52100 1/8" thick, 8.5" blade, 13.5" OAL, 56rc does against 2x4. So, I am putting a plain boring KOA wood handle on this experimental blade I made a while ago.
 
Well, here is my 52100 with partially dry/set epoxy plain Koa wood handle. It took 35 seconds to chop through a 2x4 Douglas Fir.

1/8" thick 52100 (src from NJsteelbaron)
8.5" blade, 13.75" OAL, 10.4 oz
Super quenched, 56HRC
Koa wood handle (11 hidden pins ;) G-Flex epoxy)
Sharpened 30* inclusive bevel angle

[video=youtube_share;w0sIa9PebGY]http://youtu.be/w0sIa9PebGY[/video]
 
bluntcut said:
Well, here is my 52100 with partially dry/set epoxy plain Koa wood handle. It took 35 seconds to chop through a 2x4 Douglas Fir.

1/8" thick 52100 (src from NJsteelbaron)
8.5" blade, 13.75" OAL, 10.4 oz
Super quenched, 56HRC
Koa wood handle (11 hidden pins ;) G-Flex epoxy)
Sharpened 30* inclusive bevel angle

[video=youtube_share;w0sIa9PebGY]http://youtu.be/w0sIa9PebGY[/video]
Click to expand...

52100 is what I was waiting for ;)
:thumbup: performance!
 
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