ZDP 189: Super Steel Confirmed in Knearf Larrp

cedric-ada-sto...
Good gravy its bricky on things
Subscribe and hit the bell! Hit like and all that good stuff.
docs.google.co... - Full steel testing list for my cut test videos, free to all.
/ cedricada - support me on patreon if you like, helps me do the expensive stuff!

[@charlescollier7217]

Pete, I think you've really hit your zone. The combination of toilet humor, puntastic nerdiness, sci-fi/fantasy references, genuine scientific curiosity, philosophical and intellectual exploration, and fundamental human goodness hits a LOT of bells at the same time. Plus shiny sharp stuff!

[@nupersoob]

This comment was posted completely willingly. Basil did not force me to write it. I am not under duress. Good video, human.

[@CedricAda]

A N O T H E R F E L L O W H U M A N W I T H W H O M T O C O N V E R S E

[@briarhugo3650]

A tip: watch movies at flixzone. Me and my gf have been using it for watching loads of movies lately.

[@adrienkameron929]

@Briar Hugo yup, been watching on Flixzone for months myself :D

[@kknives_switzerland]

😂😂

[@cfltitan]

I LOVE my British racing green Endura in ZDP! With a good sharpening it’s downright scary sharp and it’s very comforting to know it’ll also hold it forever and a day too. Thank you for the great videos and all the hard work you put in to them.

[@BradGryphonn]

Yes, I have the British Racing Green ZDP-189 Delica. It was worth every dollar I paid for it. Praise Basil. Lord of all planets.

[@deathbyastonishment7930]

Hey Brad, how do you feel about the knife after all this time?

[@BradGryphonn]

@@deathbyastonishment7930 Hey, mate. Many more years on and the Delica is still going strong. I have a few shots on my channel where I recently stripped it down and cleaned it.

[@Gpknives]

Great video Pete. ZDP is some pretty amazing stuff even if it loses some corrosion resistance as a trade off. Thanks as always for your entertaining education.

[@kevinAuman1]

Funny you say that it was so hard to sharpen or to remove material because I've got the stretch in zdp and I'm almost shocked with how easily it sharpens and how incredibly the edge comes up! I've noticed that using a higher grit might even remove material faster and it is less work in the end...

[@oceanwaves83]

I'd like to see how it would do after 2 more sharpenings, ensuring the fatigued steel is removed.

[@glockgaston2922]

The intro was a glorious masterpiece!!! Great video thanks for sharing Pete!!!

[@michaelrash1478]

Awesome result. ZDP 189 really is some impressive stuff.

[@scottb.0185]

Diggin’ the tune to the factory edge!

[@darichard11]

Similar experience when I re-profiled a ZDP Stretch. Kept trying to figure out what I was doing wrong. It took a long time get it apexed.

[@jacobyoung4657]

I put a 16dps edge on my ZDP-189 (endura) and a small micro bevel I gotta say it stays sharp for a hell of a long time.

[@Outpost_76]

The ZDP Kurt has done a Rockwell on so far were at 63 hrc. Great results from ZDP.

[@bp-hx9ts]

Outpost 76 yeah pretty impressive for a large scale production company rocksteady can get it to 67 I think that’s crazy

[@Outpost_76]

@@bp-hx9ts I was just talking with someone about that last night. I'd love to get a Rockstead to test.

[@JacksonKnives]

Sypderco went higher for their "mule team" steel-testing blade run, and a bunch of them cracked after delivery. 63 is a good compromise that keeps everyone happy. It's one thing to talk about theoretical numbers, but if manufacturers start giving us what we ask for we might get some nasty surprises.

[@bp-hx9ts]

JacksonKnives they probably fucked up the ht in another way not because of hrc

[@Outpost_76]

@@JacksonKnives with some steels sure, lots though are run much softer than needed and a perfect example is the M390, 20CV and 204P trio of steels. Claimed hrc isnt close on most of them a group of us has been sending off for Rockwell testing.

[@dash8465]

When did ZDP come out? Seems like I've had my green Dragonfly's and Caly3's for 10+ years? I discovered way back then how excellent ZDP is and I bought spares... sort of.. I liked the zdp enough that I bought 3 green Dragonfly's and one G10 Dragonfly, took them all apart hoping for a zdp blade that fit the G10 handle and lock in open/closed positions nearly perfect and I got lucky. So now I have a nice G10/ZDP Dragonfly, 1 edc frn/zdp, 1 spare frn/zdp Dragonfly, 1 edc cf/zdp Caly, 1 spare Caly.. and my little bro got a free bastardized green frn/vg10 Dragonfly. I still sharpen with a old clamping Gatco diamond system, the zdp does really well on it, especially following my worn almost smooth fine hone... I dunno about mirror polished, but I end up with a slightly toothy 19deg razor that falls through anything fiberous, holds that edge a very long time, and is easily touched up with 2-3 very light forward freehand passes across the fine hone (I use oil btw). But your right... zdp is tiresome to sharpen, and its also hard on hones/stones.

[@chrisgriffin5184]

Great information Cedric, I learn a lot from you. Don't ever stop.

[@farva37]

The Sonic music from your first test was epic. It just took me back. 🍻

[@christopherhiggins8238]

All hail the CAT!!! And remember to thank the cat for allowing the human to make this video.

[@robertdean9633]

Gotta love the old school sonic music👍

[@yeaman992]

+Cedric & Ada Gear and Outdoors Hey good stuff! I'd definitely like to see a ZDP test at around 8-9dps, that's around what I keep my ZDP kitchen knives in and they do just fine stability wise and definitely a bump in performance!

[@mississippiknifenut4312]

I have a g10 stretch in zdp 189 coming, cant wait to cut stuff

[@Jeffrose_]

I have a lady bug British racing green in zdp189. It is my favorite steel of all. I need more knives made in this steel.

[@kimboslice130]

Use your vast resources to acquire a Rockstead in ZDP with a factory convex edge. Love to see how that extra material behind the edge helps things. Take the Nurf Lurb to the next level. Edit: I also believe ambient humidity should be noted with each test. Soggy paper makes Jake a dull boy.

[@camojoe83]

Haha! Basil looks so soft.. Never knew he was a hardass prison warden for the knerrrf lerrrrb!

[@dave7mm083]

Pete, many thanks for doing the ZDP 189, again

[@quewerty8401]

Took me a bit to recognize the cutting tune. Bravo.

[@ozyrob1266]

Hard to see how this steel somewhat has fallen out of favor after it's initial superstar popularity. Great test Pete.

[@edsaunders1897]

Not gonna lie, I normally fast forward the cutting bits - I trust you to count right. But this time - sonic music! Had to watch it twice! Brings back childhood memories

[@knifetech101]

My ZDP delica is my go to work knife... loved it so much I bought 2

[@d4mdcykey]

I suggest a T-shirt with a freeze-frame of you squatting over that litter box, that was freakin' hilarious. It was like a modern version of the poster with Zappa on the toilet; well done, sir. I'm not too familiar with ZDP 189 but that was damn impressive results.

[@jfnurod]

My lord Pete I just had a panic attack! That was that music from that factory level with the water I drowned in repeatedly as a kid ahhhhhh

[@CedricAda]

that purple water man, 7 year olds nightmare

[@jfnurod]

@@CedricAda Yes it was absolutely horrible and it sped up when you were close to death as well! 🤬🤬🤬

[@TacticalBunnyCA]

I would be really interested to know roughly how long you spend sharpening the knives before your tests

[@Malegole]

What i got from this video - ‘hey, ZDP holds an edge real well”

[@CedricAda]

my whole lifes work can boil down to: “Some steels hold and edge real well, others dont hold an edge for as long”

[@REBELSCL]

Thanks for this I’m considering buying that exact knife….. I wonder if I can change the scales?

[@MobiuSphere]

Best knife lab intro to date XD

[@DLT704]

Love the sonic music

[@saintofchelseathomascarlyl5713]

if you look at knifesteelnerds 42 micrograph photos you can see zdp189 has 29% carbides....so much that its barely even steel anymore its 30% glass more or less (in the photo the amount of carbides is so large they connect to each other)

[@Chase1297]

I always thought that steeper angles were more sharp but more short lived. I guess they last longer because of the geometry but more delicate in terms of chipping/rolling

[@acid6urns]

correct. thinner angle edges will be sharper and cut for longer, dropping from 20 dps to 15 dps can almost double edge retention of some steels. but thin edges are obviously more delicate. acute angles aren’t good on low toughness knives, they’re better to use on knives w good edge stability such as cruwear, magnacut, 4v, 3v etc

[@aradoran]

Pete: Positively reviews knife/steel from my wish list. Me: Dang better go buy that before they sell out...

[@crrassh69]

Hey Big Shooter if you have the time a new avenue of testing could be the micro bevel. Say a 17 degree mirror polished edge with a toothy or mirror polished 19 degree micro bevel or a toothy edge with mirrored micro bevel. I know the micro bevel will stabilize an edge but will it last longer. Anyway have a great week buddy.

[@JustPorcupines]

Micro bevels always blunt faster. 17 dps is narrower than 19(obviously), but this actually puts less strain on the apex, unless the knife is used for chopping or hits something hard. Micro bevels are good for edge strength and ease of sharpening, but again, at the cost of edge retention.

[@johnbowen5336]

Pete, on April 20 the Hapstone R1 will be released at it's normal price by Gritomatic. With that and a set of Edge Pro Diamond Matrix stones you will be able reprofile knives to 12 degrees polished edge, instead of faffing about with the Tormek. Just saying.

[@jamesbarisitz4794]

Good stuff. Now I have to Google "Should I polish a Maxemet edge? "

[@raedien]

The music is so good.

[@knifelife7777]

Hahaha bro you had me Rollin with that intro! Good stuff

[@Wzrd100]

What's the music in the background while you were sharpening?

[@slick_slicers]

I wish rockstead would send you a knife to test! They’re ZDP189 is hardened to67!

[@cainkopczynskie6296]

Super steel Steve just dida great video on edge geometry and thickness behind the edge

[@perspicacity89]

As an aside, is the Lansky Sharpener shit? I have an Edge Pro but it is way too time consuming to use. I want to get a Wicked Edge but I mostly just use my Sharpmaker and strops. I HATE the time it takes to sharpen knives. On that note, can you recommend any really good people who sharpen knives professionally? Thanks mate.

[@timbo4374]

I have the MBK Slayback in ZDP-189 with a hrc of 66-67. I wonder how much more it would do?

[@howardgreen9718]

It’s killing me I want to get another LT Wright knife but I want the ZDP-189 Delica as well but I can only afford one

[@jacobyoung4657]

The zdp will be loved more

[@starkparker16]

Larceny is your friend. Get both, pay for none.

[@CJ-hw4zc]

This is still my favorite steel.

[@AlterMacGyver]

We of course know a lot about steels at this point, but have you ever considered cutting a different kind of similar-thickness rope or even a different brand of it with a well-tested steel to see how the results differ? Maybe not as good #content(tm) as testing the steels themselves but I think it'd be interesting to see how widely other test variables can vary

[@brendanenon864]

#throwoutyourbaseline

[@dataclast]

you are comparing steels using different knives, are you accounting for differing blade geometry?

[@ozyrob1]

Why didn't spyderco do a ZDP 189 PM2? Maybe when the FRN version starts they'll make one.

[@CedricAda]

it seems to be that hitachi maybe only sell it to other japanese factories, but thats just speculation!

[@ozyrob1]

@@CedricAda I didn't think of that Japanese steel thing but yeah, that's probably why. A shame the do that but I guess there are a million steels to make PM2s out of 👍

[@noblekab744]

Thanks Pete

[@TheOneAndOnlySame]

"Zoop Dee Poo (Da Dum Da Dum Tssssss Tee Pa-Dum Tee-Pee Da-Dum Dum) 189 steel is an excellent and groovy steel" -Basil

[@sodalines]

you can really lay zdp 189 back pretty far. iv done 11 degrees on both sides and never had a problem with everyday stuff.

[@edcevo3052]

I know this is years ago but mbk mini old gaurd wharny is zdp 189 at 66 to 67 hrc. Just got mine today

[@dandildarious4849]

It is SO easy to strop ZDP 189!

[@brucemack3687]

You used to reprofile at < 15°. Did you find the edge fragile?

[@CedricAda]

i mInly found it made the knives look a little too weird, I was losing heaps of money in resale. I’ll still do it from time to time, but yeah, my stuff relies anfair bit on buying and selling so that what slowed that down

[@zdp-189]

Lil bit of Chemical Plant Zone with some high carbon ZDP-189, tremendous amalgamation! EDIT: and that great last boss song from Undertale- Is that FF V or VI music in there also I hear?

[@kenroman777]

on the KME it was my first sharpen and I got tennis elbow..

[@micahbrandt8726]

All the memes, this channel is something else, I love it

[@Apex_grind562]

Amazing intro!!!! Beautiful cat!

[@ngskull]

848 passes...ouahou! Isit your record?

[@DuxLindy]

I like ZDP-189 but I've always had the same issue with sharpening it.

[@eugenethugeugenethug2226]

Hi . I cant choose which knife to buy, Spyderco Endura4 zdp-189 or cold steel recon 1 spear point cts-xhp or s35vn. Please help me to choose.

[@davidtate166]

Wow super cutter steel I like it .cool 😎

[@brianf9619]

That's Funny because I have an Endura 4 and a Delica 4 with ZDP-189 and they Will Not hold an edge at all , it's more like 7CR18MOV , someone told me I can send them back to Spydero for Testing because Spyderco had a Bad Batch of ZDP-189 , thus leading to its Demise at Spyderco.....

[@stopthephilosophicalzombie9017]

Just discovered your channel. Mind if I ask what sharpening kit that is?

[@Luk3d411]

Kme Sharpener

[@MaxHarden]

You made a Rockco Spyderstead blade

[@johnruff7417]

Awesome shirt!

[@kevinhunt8863]

Did you simply strop it to get it scary sharp again?

[@derschwarzgeist]

Great video, always wondered how ZDP stacks up with the ultra-vanadium steels. Be careful using that Sonic music, KZbin seems to be pretty trigger-happy on the copyright bancannon lol

[@aleach07]

Another excellent knife lab! Chemical Plant Zone FTW!

[@dobypilgrim6160]

Have I missed this answer before? What the heck do you do with all those cut rope remnants? Stuff your cat pillows with them, or just add it to your Vegemite for extra fiber in your diet? OR...do you have more rope girlfriends out in another shed someplace? Great video. Lots of work as always!

[@deanalbertson7203]

I like ZDP 189 steel on a folding knife. Endura, Delica, Dragonfly.

[@tjmcdonald7885]

What sharpening system are you using?

[@Elslemmo]

Sephiroth's favorite whittling steel..... True fact!!.....Somewhat

[@lordtartarsauceb8348]

what sharpener does he use

[@econrey]

Interested in testing a ZDP variant of a ZT 0450?

[@joshinside7181]

Man your hell'a funny!!!! Love your video's.

[@mattszymanski4684]

Where can one purchase a knife lab shirt?

[@Pew7070]

Pete, why the hell is my Dragonfly dulling so fast? Underhardened? I think so. ZDP189 is a good steel but it has to be hardened over 60HRC to be good.

[@CedricAda]

that sounds like a munted heat treat for sure. not outside the realms of possibilty with spyderco. ive had a flaky zdp dragonfly in the past, too

[@misterbaker9728]

Love to see a board of directors meeting of the rope company. Chart with all the countries sales on it.. “why the hell is Australia buying all this rope? We don’t do sales we don’t even advertise

[@Elslemmo]

All your Knerf labs, are belong to us.

[@american1911]

Great work, Thanks!

[@davidpeters1042]

Damn thats an impressive steel

[@bach5780]

Was that Sonic music?

[@CSLFiero]

Sad thing about zdp, I feel like if you get a bulk lot from seki city, your'e not gonna get the best it can offer. special lots have come out with 70HRC and they don't see average folding use. I think they go to chefs who order custom knives and pay (and I mean really pay) big bucks. midtech price for a otherwize basic looking kitchen knife.

[@robotoa]

Hello . Doesn't ZDP come in a laminated form ? If ZDP only constitutes the core steel then the corrosion test is flawed . You might be corroding the steel cladding . Great vid and thanks for all that work .

[@dplagany]

My delica is not laminated. Assuming he has the same one.

[@JacksonKnives]

Different Spyderco OEMs use different stock. Gerber Sakai makes the Dfly/Delica/Endura, and they use monosteel stock. Moki makes the Caly series, they use laminate for the CF ZDP model. (Sometimes that flips with other steels, ironically.)

[@robotoa]

@@JacksonKnives Thanks for the info . I stand corrected now .

[@aradoran]

Do do do do do. Knife Lab. Da do do do do do dah. Knife Lab. Comedic genius

[@beck4218]

Necro, but ZDP is still a super steel. Yeah, it's not a pry bar, but my Rockstead Ren is amazing.

[@kreacher9681]

ZDP-189 unleashed to the max when?

[@JacksonKnives]

This! Find the limit! (And do Maxamet at the same time!)

[@xabalba555]

JacksonKnives at the same time? you do know he still needs his hands afterwards right?

[@mattg6136]

Good one that Pete. Chrs. Mate.

[@CSLFiero]

The chromium is suppose to bind up to the carbon. it gives it the chonky carbitamins.

[@jeo1349]

Fantastic vid, great job man.---------

[@rusterkat1188]

I knew Basil was in charge all along. It was obvious to me by the half way point of season 4.

[@JustPorcupines]

Just wait, there's a huge plot twist in season 9.....

[@PATISHAH]

zdp-189 is much better in edge retention than most steels on the market... it is not as good as 15v or s125v, but it is comparable... it will cut much longer if you make sharping on 20 degree. I dont know why hitachi stopped production... its very pricey...

[@branislavhadzija9216]

Make some test with D3 steel from Bohler, it is interesting steel

[@bp-hx9ts]

Zdp is some great stuff got it in a dragonfly debating an endura or a police 4 lost my broken skull need some new bigger knives