CPM 20CV — rolling

J

Jay2021

Joined
Jun 27, 2021
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Hello everyone, happy holidays. I was cutting almond brittle last night (no joke) with a brand new folder made with CPM 20CV and the knife tip rolled…in a matter of seconds it went from a nice pointy tip to dull. Has anyone else ever had bad experiences with this steel and with it rolling so easily? I expected a lot more from it to be honest, especially since it's a made in the USA knife that cost me around $120. Otherwise, I have no complaints with this steel...this folder was easily one of the sharpest out of the box I've ever received and it cuts like a charm. Please let me know what you guys think and how you'd fix it--sharpening, stropping, etc. Thanks!
https://imgur.com/a/BYyuQAb

Revised: here's the infamous almond brittle, which is excellent and actually not at all that hard when you bite into it.
https://imgur.com/L6d5NUB
 
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unwisefool said:
What were you cutting on? I had that happen as well, when it hit the glass behind it.
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Very good point. Thanks for your input. I was cutting it inside the box, one of these thin cardboard pastry boxes, but on top of a granite counter top. The knife tip definitely didn't cut through the box though...no markings on the bottom of the box, but maybe there was some impact and that dulled the tip.
 
Jay2021 said:
Thanks for your input. I'll have to re-sharpen/reprofile it one of these days. I was hoping that CPM 20CV could withstand a little bit more than this.
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More than stabbing a granite countertop? I would just sharpen it normally as needed and that tip will clean up in time.

What knife is that, btw?
 
DMG said:
More than stabbing a granite countertop? I would just sharpen it normally as needed and that tip will clean up in time.

What knife is that, btw?
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OK, thanks for your input. I'll sharpen it up. The knife barely tapped the bottom of the pastry box, which is why I was so surprised that the tip dulled. It really took just the tiniest of taps. It's a Hogue Deka. Great knife, I recommend it. Just don't go cutting up any almond brittle.
 
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At least it didn't chip out :oops:, CPM 20CV is excellent steel, however, any steel that doesn't have enough steel behind the edge can/will have issues. I'm extremely careful with my Spyderco's, some of those tips look like they'd break off just by wiping it down.
Yeah, you definitely hit the countertop, sometimes it doesn't take much. I'd knock off the folded steel with a stone for right now and continue to use the knife until it needs sharpening, then address the tip.
I bet you don't do that again 😞
 
I wouldn't worry about it yet. You can see how much deeper the grit grooves are near the tip, as well as the edge bevel being wider. So the angle was more acute and more metal was pushed off, without a lot of cleanup afterwards. There even looks like a remnant of a wire edge.

My guess is that if you resharpen it properly, all will be fine.
 
Ajack60 said:
At least it didn't chip out :oops:, CPM 20CV is excellent steel, however, any steel that doesn't have enough steel behind the edge can/will have issues. I'm extremely careful with my Spyderco's, some of those tips look like they'd break off just by wiping it down.
Yeah, you definitely hit the countertop, sometimes it doesn't take much. I'd knock off the folded steel with a stone for right now and continue to use the knife until it needs sharpening, then address the tip.
I bet you don't do that again 😞
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You're right, it doesn't have that much steel behind the edge so I shouldn't be too surprised. I must have tapped the countertop. I hear you on the Sypderco knives...they're great but very thin at the tip. For now I'll knock off the folded steel with a stone as you suggested and wait a while until it needs sharpening. Lesson learned though: next time I'll definitely be putting a cutting board under my almond brittle.
 
Jay2021 said:
OK, thanks for your input. I'll sharpen it up. The knife barely tapped the bottom of the pastry box, which is why I was so surprised that the tip dulled. It really took just the tiniest of taps. It's a Hogue Deka. Great knife, I recommend it. Just don't go cutting up any almond brittle.
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Hogue does a good job with 20cv, imho. Almond brittle and peanut brittle are no joke, though. I know a bunch of people that have broken teeth on the stuff.
 
Twindog said:
I wouldn't worry about it yet. You can see how much deeper the grit grooves are near the tip, as well as the edge bevel being wider. So the angle was more acute and more metal was pushed off, without a lot of cleanup afterwards. There even looks like a remnant of a wire edge.

My guess is that if you resharpen it properly, all will be fine.
Click to expand...
Thanks for your expertise and input. Thankfully, there seems to be general consensus that after a resharpening it will clean up just fine.
 
DMG said:
Hogue does a good job with 20cv, imho. Almond brittle and peanut brittle are no joke, though. I know a bunch of people that have broken teeth on the stuff.
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I agree, Hogue does a great job. And almond and peanut brittle are definitely no joke! They'll do a number on your teeth if you're not careful.
 
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Looks almost exactly like the S110v Para 3 I got and accidentally bumped the tip on the countertop a day or two later (putting it down, not even cutting anything 😒)

C4n8VHR.jpg


I used ceramics to get it back in shape/remove the bent over part and continue to use it as is for now. It'll sharpen out fine first reprofile.
 
I had the 20cv on my TRM Atom roll after a few boxes. I was surprised also but I know factory edges are a little more prone to it. I think after a few sharpening it will be just fine.
 
kreole said:
Looks almost exactly like the S110v Para 3 I got and accidentally bumped the tip on the countertop a day or two later (putting it down, not even cutting anything 😒)

C4n8VHR.jpg


I used ceramics to get it back in shape/remove the bent over part and continue to use it as is for now. It'll sharpen out fine first reprofile.
Click to expand...
Sorry to hear that. I feel your pain. Nice blade though.
 
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